Team Fortress 2 Item Attribute Indexes

This is a list of the item attribute indexes in TF2. These are useful for applying to weapons to change how they work.

This was created as a companion list for the Item Definition Indexes list, which contains the indexes of the weapons themselves.

This list is divided into Attribute Types, Positive Attributes, Negative Attributes, and Neutral Attributes.

Normally, you'll want to use this with TF2Items.

Attributes that have no weapons listed may not work. Matched attributes where the opposite

Attribute Types

Type	Description	Example
percentage	Expressed as a decimal. 100% is 1.0, 90% is 0.9. Sometimes boolean attributes are represented as percentages.	Natascha: "damage penalty" "0.75" does 75% of normal damage.
inverted percentage	Expressed as a decimal. Value is a percentage, but the percentage is subtracted from 100% when displayed to the user.	Übersaw: "fire rate penalty" "1.2" sets the fire rate to 80% but displays that the weapon fires 20% slower.
additive	Value is added to the default value. Value can be positive or negative. Boolean values are normally expressed as additive.	Blutsauger: "heal on hit for rapidfire" "3.0" makes a Medic heal 3hp whenever damage is dealt with it.
additive percentage	Value is a percentage added to the default value. Value can be positive or negative.	Übersaw: "add user charge on hit" "0.25" makes a Medic gain 25% uber whenever he hit someone with it.
or	Used on only one attribute (see example) for a boolean value. Usually, additive is used instead.	Axtinguisher: "crit vs burning players" "1.0"

Attributes

Index	Name	Type	Weapons that use this attribute	Attribute text	Notes
1	damage penalty	percentage	Natascha, Force-a-Nature, Ambassador, Tribalman's Shiv, L'Etranger, Rocket Jumper, Gloves of Running Urgently, Stickybomb Jumper, Jag, Sharpened Volcano Fragment, Sun-on-a-Stick, Fan O'War, Overdose, Family Business, Eviction Notice, Cow Mangler 5000, Disciplinary Action, Diamondback, Phlogistinator, Wrap Assassin	%s1% damage penalty
2	damage bonus	percentage	Backburner, Direct Hit, Scotsman's Skullcutter, Loch-n-Load, Warrior's Spirit, Brass Beast, Back Scratcher, Winger, Enforcer	+%s1% damage bonus
3	clip size penalty	percentage	Force-a-Nature, Frontier Justice, Black Box, Loch-n-Load, Liberty Launcher, Reserve Shooter, Soda Popper, Winger	%s1% clip size
4	clip size bonus	percentage	Family Business	+%s1% clip size
5	fire rate penalty	inverted percentage	Übersaw, Killing Gloves of Boxing, Ambassador, Tomislav, Atomizer	%s1% slower firing speed
6	fire rate bonus	inverted percentage	Force-a-Nature, Scottish Resistance, Eviction Notice, Soda Popper	+%s1% faster firing speed
7	heal rate penalty	percentage		%s1% heal rate
8	heal rate bonus	percentage	Quick-Fix	+%s1% heal rate	Medic only.
9	ubercharge rate penalty	percentage		%s1% ÜberCharge rate
10	ubercharge rate bonus	percentage	Kritzkrieg, Quick-Fix	+%s1% ÜberCharge rate	Medic only.
11	overheal bonus	percentage		%s1% more overheal	Medic only.
12	overheal decay penalty	percentage		%s1% shorter overheal time
13	overheal decay bonus	inverted percentage		+%s1% longer overheal time	Medic only.
14	overheal decay disabled	percentage		Overheal bonus doesn't decay	Medic only.
15	crit mod disabled	percentage (should be additive)	Eyelander, Frontier Justice, Gunslinger, Southern Hospitality, Sydney Sleeper, Stickybomb Jumper, Horseless Headless Horsemann's Headtaker, Ullapool Caber, Claidheamh Mòr, Persian Persuader, Market Gardener, Cow Mangler 5000, Soda Popper, Nessie's Nine Iron, Diamondback, Short Circuit, Phlogistinator, Manmelter	No random critical hits	Attribute 28 is the hidden version of this attribute. Weapons with this attribute can still be critboosted by other means. Use attribute 288 for weapons that can never be crit-boosted.
16	heal on hit for rapidfire	additive	Blutsauger, Black Box	On Hit: +%s1 health
17	add uber charge on hit	additive percentage	Übersaw	On Hit: %s1% ÜberCharge added	Medic only.
18	medigun charge is crit boost	additive	Kritzkrieg	ÜberCharge grants 100% critical chance	Mediguns only.
19	tmp dmgbuff on hit	additive percentage		On Hit: +%s1% damage bonus
20	crit vs burning players	or	Axtinguisher, Sun-on-a-Stick, Postal Pummeler	100% critical hit vs burning players
21	dmg penalty vs nonburning	percentage	Axtinguisher, Postal Pummeler	%s1% damage vs non-burning players
22	no crit vs nonburning	additive	Axtinguisher, Postal Pummeler	No critical hits vs non-burning players
23	mod flamethrower push	additive		No compression blast	Obsolete attribute. Formerly used on Backburner.
24	mod flamethrower back crit	additive	Backburner	100% critical hits from behind	Pyro only.
25	hidden secondary max ammo penalty	unknown, assumed percentage	Flare Gun, Detonator		Alter the max ammo for a Secondary weapon. Can be positive or negative. Attribute 37 is the Primary weapon version of this attribute.
26	max health additive bonus	additive	Gunslinger, Darwin's Danger Shield, Ali Baba's Wee Booties, Bootlegger, Special Delivery Set bonus	+%s1 max health on wearer	Formerly on Backburner, but was removed in mid-2008. Opposite of attribute 125.
27	alt-fire disabled	additive			Never implemented. Replaced by attribute 23.
28	crit mod disabled hidden	percentage (should be additive)	Backburner	No random critical hits	Attribute 15 is the non-hidden version of this attribute.
29	alt-fire is vampire	additive
30	fists have radial buff	additive		On Kill: +50 health on nearby teammates. On Kill: +10% Crit Chance on nearby teammates	Heavy only?
31	critboost on kill	additive	Killing Gloves of Boxing (K.G.B.)	On Kill: %s1 seconds of 100% critical chance
32	slow enemy on hit	additive	Natascha	On Hit: %s1% chance to slow target
33	set cloak is feign death	additive	Dead Ringer	Cloak Type: Feign Death	Only usable on tf_weapon_invis.
34	mult cloak meter consume rate	percentage	Dead Ringer	+%s1% cloak drain rate
35	mult cloak meter regen rate	percentage	Cloak & Dagger	+%s1% cloak regen rate
36	spread penalty	percentage		%s1% less accurate	Opposite of attribute 106.
37	hidden primary max ammo bonus	unknown, assumed percentage	Huntsman		Alter the max ammo for a primary weapon. Can be positive or negative. Attribute 25 is the Secondary weapon version of this attribute.
38	mod bat launches balls	additive	Sandman	Alt-Fire: Launches a ball that stuns opponents	This is for stunballs only. For bleed ornaments, use attribute 346.
39	smg penalty vs nonstunned	percentage		%s1% damage vs non-stunned players	Not implemented.
40	zoom speed mod disabled	additive		No move speed penalty from zoom	Not implemented.
41	sniper charge per sec	percentage	Sydney Sleeper	+%s1% charge rate	Sniper only.
42	sniper no headshots	additive	Sydney Sleeper, Crusader's Crossbow	No headshots
43	scattergun no reload single	additive	Force-a-Nature, Soda Popper		Scatterguns only? Forces all rounds in a clip to be lost if reloaded when bullets are still in the clip.
44	scattergun has knockback	additive	Force-a-Nature	Knockback on the target and shooter	Scatterguns only?
45	bullets per shot bonus	percentage	Force-a-Nature, Soda Popper	+%s1% bullets per shot	Scatterguns and Shotguns only.
46	sniper zoom penalty	percentage		%s1% zoom reduction	Sniper rifle only. May not be implemented.
47	sniper no charge	additive		No zoom or damage charge	Not implemented.
48	set cloak is movement based	additive	Cloak and Dagger	Cloak Type: Motion Sensitive	Also prevents cloak from being regenerated by ammo boxes and dropped weapons.
49	no double jump	additive		Disables double jump	Formerly on Sandman.
50	absorb damage while cloaked	percentage		Absorbs %s1% damage while cloaked	Not implemented. This is now implemented as part of attribute 33.
51	revolver use hit locations	additive	Ambassador	Crits on headshot	Causes weapon to headshot if the head is hit. Not clear if it only applies to Revolvers.
52	backstab shield	additive	Razorback	Blocks a single backstab attempt
53	fire retardant	additive			Formerly used in TF2 Beta for the Fire Retardant Suit. Use attribute 361 instead.
54	move speed penalty	inverted percentage	Scotsman's Skullcutter	%s1% slower move speed on wearer
55	obsolete ammo penalty	unknown, assumed percentage			Use other ammo attributes instead.
56	jarate description	percentage (should be additive)	Jarate	Coated enemies take mini-crits Also handy for putting out a fire	Display only, the actual effect is built into tf_weapon_jar
57	health regen	additive	Medieval Medic Set Bonus	+%s1 health regenerated per second on wearer	Opposite of attribute 129.
58	self dmg push force increased	percentage		+%s1% self damage force	Soldier and Demoman only.
59	self dmg push force decreased	percentage		%s1% self damage force	Soldier and Demoman only.
60	dmg taken from fire reduced	inverted percentage	Chargin' Targe, Splendid Screen, Expert's Ordnance Set Bonus	+%s1% fire damage resistance on wearer
61	dmg taken from fire increased	percentage	Southern Hospitality, Bushwacka, Rocket Jumper	%s1% fire damage vulnerability on wearer
62	dmg taken from crit reduced	inverted percentage	Hibernative Bear Set Bonus	+%s1% critical hit damage resistance on wearer	Not used by Battalion's Backup.
63	dmg taken from crit increased	percentage		%s1% critical hit damage vulnerability on wearer	Due to its nature, this attribute will never make it into the game.
64	dmg taken from blast reduced	inverted percentage	Chargin' Targe, Splendid Screen	+%s1% explosive damage resistance on wearer
65	dmg taken from blast increased	percentage	Rocket Jumper, Candy Cane	%s1% explosive damage vulnerability on wearer	Formerly on Sticky Jumper.
66	dmg taken from bullets reduced	inverted percentage		+%s1% bullet damage resistance on wearer
67	dmg taken from bullets increased	percentage	Pain Train, Rocket Jumper, Gas Jockey's Gear Set Penalty	%s1% bullet damage vulnerability on wearer
68	increase player capture value	additive	Pain Train	+%s1 capture rate on wearer
69	health from healers reduced	percentage	Back Scratcher	%s1% health from healers on wearer
70	health from healers increased	percentage		+%s1% health from healers on wearer
71	weapon burn dmg increased	percentage		+%s1% afterburn damage bonus	Pyro only.
72	weapon burn dmg reduced	percentage	Degreaser	%s1% afterburn damage penalty	Pyro only.
73	weapon burn time increased	percentage		+%s1% afterburn duration	Pyro only. Applies to afterburn.
74	weapon burn time reduced	percentage		%s1% afterburn duration	Pyro only. Applies to afterburn.
75	aiming movespeed increased	percentage		+%s1% faster move speed while deployed
76	maxammo primary increased	percentage	Rocket Jumper	+%s1% max primary ammo on wearer	Hidden version is attribute 37.
77	maxammo primary reduced	percentage	Crusader's Crossbow	%s1% max primary ammo on wearer	Hidden version is attribute 37.
78	maxammo secondary increased	percentage	Scottish Resistance, Stickybomb Jumper	+%s1% max secondary ammo on wearer	Hidden version is attribute 25.
79	maxammo secondary reduced	percentage		%s1% max secondary ammo on wearer	Hidden version is attribute 25.
80	maxammo metal increased	percentage		+%s1% max metal on wearer	Engineer only. May not be implemented.
81	maxammo metal reduced	percentage		%s1% max metal on wearer	Engineer only. May not be implemented.
82	cloak consume rate increased	percentage		-%s1% cloak duration	Spy only. Use attribute 34 instead.
83	cloak consume rate decreased	inverted percentage		+%s1% cloak duration	Spy only. Use attribute 34 instead.
84	cloak regen rate increased	percentage		+%s1% cloak regeneration rate	Spy only. Use attribute 35 instead.
85	cloak regen rate decreased	percentage		-%s1% cloak regeneration rate	Spy only. Use attribute 35 instead.
86	minigun spinup time increased	percentage	Natascha, Brass Beast	%s1% slower spin up time	Minigun only.
87	minigun spinup time decreased	inverted percentage	Tomislav	%s1% faster spin up time	Minigun only.
88	max pipebombs increased	additive	Scottish Resistance	+%s1 max pipebombs out	Stickybomb Launcher only.
89	max pipebombs decreased	additive		%s1 max pipebombs out	Stickybomb Launcher only.
90	SRifle Charge rate increased	percentage		%s1% faster power charge	Sniper only. Use attribute 41 instead.
91	SRifle Charge rate decreased	inverted percentage		%s1% slower power charge	Sniper only. Use attribute 41 instead.
92	Construction rate increased	percentage	Jag	%s1% faster construction rate	Engineer only. Only applies to melee hits.
93	Construction rate decreased	inverted percentage		%s1% slower construction rate	Engineer only. Only applies to melee hits.
94	Repair rate increased	percentage		%s1% faster repair rate	Engineer only.
95	Repair rate decreased	inverted percentage		%s1% slower repair rate	Engineer only.
96	Reload time increased	percentage	Cow Mangler 5000	%s1% slower reload time	Hidden version is attribute 241.
97	Reload time decreased	inverted percentage	Soda Popper	%s1% faster reload time
98	selfdmg on hit for rapidfire	additive		On Hit: %s1% health	Negative version of attribute 16.
99	Blast radius increased	percentage		+%s1% explosion radius	Soldier and Demoman only.
100	Blast radius decreased	percentage	Direct Hit	%s1% explosion radius	Soldier and Demoman only.
101	Projectile range increased	percentage		+%s1% projectile range
102	Projectile range decreased	percentage		%s1% projectile range
103	Projectile speed increased	percentage	Direct Hit, Loch-n-Load, Liberty Launcher, Manmelter	+%s1% projectile speed
104	Projectile speed decreased	percentage		%s1% projectile speed
105	overheal penalty	inverted percentage		%s1% less max overheal	Obsolete, Quick-Fix uses a different way of implementing this penalty.
106	weapon spread bonus	percentage		%s1% more accurate	Opposite of attribute 36.
107	move speed bonus	percentage	Gloves of Running Urgently (G.R.U.), Gas Jockey's Gear Set Bonus	+%s1% faster move speed on wearer
108	health from packs increased	percentage	Back Scratcher	+%s1% health from packs on wearer
109	health from packs decreased	percentage		%s1% health from packs on wearer
110	heal on hit for slowfire	additive		On Hit: +%s1 health	Not used, use attribute 16 instead.
111	selfdmg on his for slowfire	additive		On Hit: %s1 health	Not used.
112	ammo regen	additive percentage		+%s1% ammo regenerated every 5 seconds on wearer
113	metal regen	additive		+%s1 metal regenerated every 5 seconds on wearer	Engineer only.
114	mod mini-crit airborne	additive	Direct Hit	Mini-crits targets launched airborne by explosions	Only for enemies knocked into the air by explosive damage. For all airborne targets, use attribute 265.
115	mod shovel damage boost	additive	Equalizer	Damage and move speed increase as the user becomes injured Blocks healing when in use
116	mod soldier buff type	unknown, assumed additive	Buff Banner, Battalion's Backup, Concheror, Phlogistinator		1 is mini-crits for yourself and allies, 2 is defense buff for yourself and allies, 3 is healing for yourself and allies, 4 is unknown, 5 is critical hits for yourself.
117	dmg falloff increased	inverted percentage			Likely not implemented.
118	dmg falloff decreased	percentage		%s1% splash damage fall off	Likely not implemented.
119	sticky detonate mode	additive	Scottish Resistance	Detonates stickybombs near the crosshair and directly under your feet	1 is Scottish Resistance mode. Presumably 0 is standard mode.
120	sticky arm time penalty	additive	Scottish Resistance	%s1 sec slower bomb arm time	Stickybomb Launchers only
121	stickies detonate stickies	additive	Scottish Resistance	Able to destroy enemy stickybombs	Stickybomb Launchers only
122	mod demo buff type	unknown, assumed additive
123	speed boost when active	percentage		%s1% speed boost while active weapon	Deprecated in favor of using attributes 107 and 128 together.
124	mod wrench builds minisentry	additive	Gunslinger	Replaces the Sentry with a fast building Mini-Sentry	Listed as negative, but should actually be neutral.
125	max health additive penalty	additive	Sandman, Eyelander, Vita-Saw, Horseless Headless Horsemann's Headtaker, Warrior's Spirit, Claidheamh Mòr, Conniver's Kunai, Big Earner, Nessie's Nine Iron	%s1 max health on wearer	Opposite of attribute 26.
126	sticky arm time bonus	additive		%s1 sec faster bomb arm time	Stickybomb Launchers only
127	sticky air burst mode	additive	Loch-n-Load	Launched bombs shatter on surfaces	Grenade Launchers only.
128	provide on active	additive	Gloves of Running Urgently (G.R.U.)	When weapon is active:	Modifies on-player attributes to only be active when this weapon is out.
129	health drain	additive	Gloves of Running Urgently (G.R.U.)	%s1 health drained per second on wearer	Opposite of attribute 57.
130	medic regen bonus	percentage		+%s1% natural regen rate
135	rocket jump damage reduction	percentage	Gunboats	s1% blast damage from rocket jumps
136	mod sentry killed revenge	additive	Frontier Justice	When your sentry is destroyed you gain revenge crits for every sentry kill	Engineer only. Crits are granted when sentry is destroyed (2 per kill, 1 per assist). Maximum 35 crits.
137	dmg bonus vs buildings	percentage	Homewrecker, Maul	%s1% damage vs buildings
139	lunchbox adds maxhealth bonus	additive	Dalokohs Bar, Fishcake	Adds +50 max health for 30 seconds	Only applies to lunchbox items
140	hidden maxhealth non buffed	additive		+%s1 max health on wearer	This is the hidden version of attribute 26.
146	damage applies to sappers	additive	Homewrecker, Maul	Damage removes Sappers	Implicitly on all Engineer melee weapons.
148	building cost reduction	additive		%s1 metal reduction in building cost	Engineer only.
149	bleeding duration	additive	Southern Hospitality, Tribalman's Shiv, Boston Basher, Three-Rune Blade	On Hit: Bleed for %s1 seconds
150	turn to gold	additive	Golden Wrench, Saxxy	Imbued with an ancient power
151	DEPRECATED socketed item definition id DEPRECATED	additive			Not used, although it could have been repurposed for Strange Parts.
152	custom texture lo	unknown, assumed additive			It's unclear what exactly this is used for.
154	disguise on backstab	additive	Your Eternal Reward, Wanga Prick	Upon a successful backstab you rapidly disguise as your victim	Spy only.
156	silent killer	additive	Your Eternal Reward, Wanga Prick, Spy-cicle	Silent Killer: No attack noise from backstabs	Spy only. Only applies on backstab.
158	add cloak on kill	additive	Big Earner	+%s1 cloak on kill	Spy only. Only applies on backstab. Do not use this and 166 on the same weapon.
160	quiet unstealth	additive	Saharan Spy Set Bonus	Reduced decloak sound volume	May still play sounds at normal volume to the player with it equipped.
162	flame size bonus	percentage		+%s1% more flame spread area	Flamethrowers only
164	flame life bonus	percentage		+%s1% more flame distance	Flamethrowers only
165	charged airblast	additive		Airblast can now be charged, which will push enemies further	Flamethrowers only
166	add cloak on hit	additive	L'Etranger	+%s1 cloak on hit	Do not use this and 158 on the same weapon.
167	disguise damage reduction	percentage			Spy only. Likely not implemented.
168	disguise no burn	additive		Immune to fire damage while disguised	Spy only. Likely not implemented. Use attribute 361 instead.
169	dmg from sentry reduced	inverted percentage	Tank Buster Set Bonus	+%s1% sentry damage resistance on wearer
171	airblast cost decreased	percentage		%s1% airblast cost	Flamethrowers only
174	flame ammopersec decreased	percentage		%s1% flamethrower ammo consumed per second	Flamethrowers only
175	jarate duration	additive	Sydney Sleeper	On Hit: Jarate applied to target for %s1 seconds	Despite the name, not used on Jarate itself.
176	no death from headshots	additive	Croc-o-Style Kit Set Bonus	The wearer cannot be killed by headshots	If you have more than one health and get headshot, reduces you to 1 health. If you have 1 health, headshots will still kill you.
178	deploy time decreased	inverted percentage	Degreaser, Reserve Shooter	%s1% faster weapon switch	This controls the weapon switch time
179	minicrits become crits	additive	Bushwacka	Crits whenever it would normally mini-crit
180	heal on kill	additive	Powerjack	+%s1 health restored on kill	See attribute 220 for the percentage version.
182	slow enemy on hit major	additive		On Hit: Slow target movement by 40% for %s1s	Use attribute 32 instead.
188	preserve ubercharge	additive	Vita-Saw	On death up to %s1% of your stored ÜberCharge is retained	Preserves this much ubercharge across deaths.
190	active health regen	additive		+%s1 health regenerated per second on wearer
199	fires healing bolts	additive	Crusader's Crossbow	Fires special bolts that heal teammates and deal damage based on distance traveled	Healing bolts heal allies and damage enemies. They do/heal more damage the farther they travel.
200	enables aoe heal	additive	Amputator	On Taunt: Applies a healing effect to all nearby teammates	Taunt with this weapon out to heal nearby allies
201	gesture speed increase	percentage		+%s1% faster taunt speed on wearer	Taunt speed increase
202	charge time increased	additive	Claidheamh Mòr	%s1 sec increase in charge duration	Demoman only. Increases how long you charge for when using the Chargin' Targe or Splendid Screen.
203	drop health pack on kill	additive	Candy Cane	On Kill: A small health pack is dropped	makes enemies drop health packs when killed, may not stack with Medieval Mode.
205	dmg from ranged reduced	percentage	Fists of Steel	%s1% damage from ranged sources while active
208	Set DamageType Ignite	additive	Sharpened Volcano Shard	On Hit: target is engulfed in flames
209	minicrit vs burning player	additive		100% minicrits vs burning players	Formerly used on Sun-on-a-Stick.
215	apply z velocity on damage	unknown, assumed additive			Unknown attribute, may be used on Valve weapons.
216	apply look velocity on damage	unknown, assumed additive			Unknown attribute, may be used on Valve weapons.
217	sanguisuge	additive	Conniver's Kunai	On Backstab: Absorbs the health from your victim.	Spy only. Steal enemy health on kill, up to 3x max HP as an overheal.
218	mark for death	additive	Fan O' War	On Hit: One target at a time is marked for death, causing all damage taken to be mini-crits	Wears off after a while. Only one enemy can be marked as a time.
219	decapitate type	unknown, assumed additive	Eyelander, Horsless Headless Horsemann's Headtaker, Half-Zoitichi, Nessie's Nine Iron		Hidden attribute, may control animations used by weapon.
220	restore health on kill	additive	Half-Zoitichi	On Kill: Restores you to %s1% health	Restores your health to a specified percent. See attribute 180 for the amount version.
221	mult decloak rate	additive			Spy only. Decloak faster?
222	mult sniper charge after bodyshot	percentage		On Scoped Bodyshot: Rifle charge rate increased by %s1%	Use tf_weapon_sniperrifle_decap weapon class instead.
224	dmg bonus while half dead	percentage	Shahanshah	%s1% increase in damage when health <50% of max
230	mod medic killed revenge	additive		When the medic healing you is killed you gain 2 revenge crits	Formerly used in TF2 Beta for Pocket Soldier weapons.
232	mod medic killed minicrit boost	additive		When the medic healing you is killed you gain mini-crit boost for %s1 seconds	Formerly used in TF2 Beta for Pocket Soldier weapons.
233	mod medic healed damage bonus	additive		While a medic is healing you, this weapon's damage is increased by %s1%	Formerly used in TF2 Beta for Pocket Soldier weapons.
235	mod shovel speed boost	additive			Formerly used in TF2 Beta for Split Equalizer weapons.
237	mult sniper charge after headshot	percentage		On Scoped Headshot: Rifle charge rate increased by %s1%	Use tf_weapon_sniperrifle_decap weapon class instead.
238	minigun no spin sounds	additive	Tomislav	Silent Killer: No barrel spin sound	Gun still clicks when spinning starts and stops.
239	ubercharge rate bonus for healer	percentage		+%s1% ÜberCharge rate for the medic healing you. This effect does not work in the respawn room	Formerly used in TF2 Beta for Pocket Soldier weapons.
240	reload time decreased while healed	inverted percentage		%s1% faster reload time while being healed	Formerly used in TF2 Beta for Pocket Soldier weapons.
242	mod medic killed marked for death	additive		When the medic healing you is killed the killer becomes marked for death	Formerly used in TF2 Beta for Pocket Soldier weapons.
244	mod rage on hit bonus	additive		%s1% rage gained on hit
245	mod rage damage boost	percentage		Gains a damage bonus as rage increases, up to %s1%
246	mult charge turn control	percentage	Ali Baba's Wee Booties, Bootlegger	+%s1% increase in turning control while charging	Demoman only. Also requires Chargin' Targe or Splendid Screen (or their charging effect).
247	no charge impact range	additive	Splendid Screen	Can deal charge impact damage at any range	Demoman only. Currently also allows the next melee to crit. This is likely a bug.
248	charge impact damage increased	percentage	Splendid Screen	+%s1% increase in charge impact damage
249	charge recharge rate increased	percentage	Persian Persuader	+%s1% increase in charge recharge rate	Demoman only. Also requires Chargin' Targe or Splendid Screen.
250	air dash count	additive	Atomizer	Grants Triple Jump: The third jump deals 10 damage when used	Allows additional jump.
251	speed buff ally	additive	Disciplinary Action	On Hit Ally: Boosts both players' speed for several seconds
252	damage force reduction	percentage	Mantreads	%s1% reduction in push force taken from damage
254	airblast functionality flags	unknown, assumed additive			Requires Flamethrower. Likely doesn't work.
255	airblast pushback scale	percentage		+%s1% airblast push force	Requires Flamethrower. Likely doesn't work.
256	mult airblast refire time	unknown, assumed additive			Requires Flamethrower. Likely doesn't work.
257	airblast vertical pushback scale	unknown, assumed additive			Requires Flamethrower. Likely doesn't work.
258	ammo becomes health	additive	Persian Persuader	All ammo collected becomes health	The amount of health restored is not specified here, but controlled by the game engine.
259	boots falling stomp	additive	Mantreads	Deals 3x falling damage to the player you land on	Deals 3x the amount of fall damage you would have taken to the person you land on.
260	deflection size multiplier	additive			Unknown, possible Flamethrower reflect related.
263	melee bound multiplier	unknown, assumed percentage	Disciplinary Action		Supposed to affect the hitboxes of friendly players when hitting them. Doesn't appear to work.
264	melee range multiplier	unknown, assumed percentage	Disciplinary Action		Supposed to affect the melee range of this weapon for friendly players. Doesn't appear to work.
265	mod mini-crit airborne deploy	additive	Reserve Shooter	Mini-crits airborne targets for %s1 seconds after being deployed	mini-crits any airborne enemies for n seconds after switching to this weapon.
266	projectile penetration	additive		Projectiles penetrate enemy players	Use other attributes instead.
267	mini-crit while airborne	additive	Market Gardener	Deals crits while the wielder is rocket jumping	mini-crit enemies if you hit them while you're airborne.
269	mod see enemy health	additive	Solemn Vow	Allows you to see enemy health	No effect for Spies; they can already see enemy health.
279	maxammo grenades1 increased	percentage			Valve was high when adding this, they forgot they removed grenades from TF2 years ago.
280	override projectile type	additive	Stickybomb Jumper		Value 14 changes the sticky model to the Sticky Jumper stickies. This is likely due to the sticky model changing after the weapon was introduced.
281	energy weapon no ammo	additive	Cow Mangler 5000, Righteous Bison, Pomson 6000, Manmelter	Does not require ammo	Replaces this weapon's ammo display with Energy display.
282	energy weapon charged shot	additive	Cow Mangler 5000	Alt-Fire: A charged shot that mini-crits players and disables buildings for 4 sec	Adds alt-fire charged shot that uses all energy to fire.
283	energy weapon penetration	additive	Righteous Bison, Pomson 6000	Projectile penetrates enemy targets	Shot penetrates targets. Requires attribute 281.
285	energy weapon no deflect	additive	Righteous Bison, Pomson 6000, Manmelter	Projectile cannot be deflected
289	centerfire projectile	unknown, assumed additive	The Original		Requires Rocket Launcher
295	has pipboy build interface	unknown, assumed additive	Pip-Boy		Engineer only, changes build interface to Pip-Boy version.
296	sapper kills collect crits	additive	Diamondback	Gives one guaranteed critical hit for each building destroyed with your sapper attached	Spy only. One crit per building killed by a Sapper (even if it assisted).
299	add onhit addammo	additive	Widowmaker	On Hit: damage dealt is returned as ammo	Engineer only. Despite the name, adds metal rather than ammo.
300	electrical airblast DISPLAY ONLY	additive	Short-Circuit	On Fire: Generates an electrical field that destroys projectiles and does slight damage to players	Short-Circuit's display text. If you want the Short-Circuit effect, you need to create a tf_weapon_mechanical_arm.
303	mod max primary clip override	unknown, assumed additive	Widowmaker, Short-Circuit		-1 makes ammo display disappear. Possibly Engineer only.
304	sniper full charge damage bonus	percentage	Machina	On Full Charge: +%s1% damage per shot
307	mod no reload DISPLAY ONLY	additive	Widowmaker, Short-Circuit	No reload necessary	No reload necessary display text.
308	sniper penetrates players when charged	additive	Machina	On Full Charge: Projectiles penetrate players	Sniper only. Only works while fully charged.
309	crit kill will gib	additive	Apoco-Fists	Killing an enemy with a critical hit will dismember your victim. Painfully.
312	disable weapon hiding for animations	unknown, assumed additive	Short-Circuit		Prevents the weapon from vanishing during taunts.
330	override footstep sound set	unknown, assumed additive	Ball-Kicking Boots		Changes sound set used by footsteps. Incompatible with attribute .
331	spawn with physics toy	unknown, assumed additive	Ball-Kicking Boots		1 spawns soccer ball near player when player spawns.
332	fish damage override	unknown, assumed additive	Unarmed Combat		1 changes the Fish Hit and Fish Kill messages to their Unarmed Combat equivalents
333	special dsp	unknown, assumed additive	Brundle Bundle Set Bonus		Pitch shifts voice clips from this player
334	bombnomicon effect on death	additive	Bombnomicon	Explode spectacularly on death	Makes players explode after death.
335	clip size bonus upgrade	percentage		+%s1% clip size
337	subtract victim medigun charge on hit	additive	Pomson 6000	On Hit: Victim loses %s1% Medigun charge	Value is actually the whole number version of the percent it takes away from the Medic on hit.
338	subtract victim cloak on hit	additive	Pomson 6000	On Hit: Victim loses %s1% cloak	Value is actually the whole number version of the percent it takes away from the Spy on hit. Currently bugged when it hits cloaked Spies and removes several times this amount.
339	reveal cloaked victim on hit	additive		On Hit Spy: Reveal cloaked Spy	Even more broken version of the Pomson effect.
340	reveal disguised victim on hit	additive		On Hit Spy: Reveal disguised Spy	Even more broken version of the Pomson effect.
346	mod bat launches ornaments	additive	Wrap Assassin	Alt-Fire: Launches a festive ornament that shatters causing bleed	Launches bleed ornaments. For stunballs, see attribute 38.
349	energy weapon no drain	unknown, assumed additive
350	ragdolls become ash	unknown, assumed additive	Phlogistinator, Manmelter
352	alt fire teleport to spawn	additive	Eureka Effect	On Alt-Fire: Teleport to spawn	May not work correctly without attribute 353 also present.
354	stun enemies wielding same weapon	additive		Stuns enemies who are also wielding this weapon	Use attribute 369 instead.
357	increase buff duration HIDDEN	unknown, assumed percentage			Likely increases the length of Soldier buffs.
358	crit forces victim to laugh	additive	Holiday Punch	Critical hit forces victim to laugh	Mini-crits do not cause victim to laugh.
360	damage all connected	additive	Third Degree	All players connected via Medigun beams are hit	Can follow multiple Medic beams.
361	become fireproof on hit by fire	additive	Spy-cicle	On Hit by Fire: Become fireproof for %s1 seconds	Makes loud extinguish sound. Also causes player to say their "on fire" line (or that of their disguise). Argument is number of seconds to be fireproof.
362	crit from behind	additive	Holiday Punch	Always critical hit from behind	It is unclear if this attribute and attribute 24 are identical.
367	extinguish earns revenge crits	additive	Manmelter	Alt-Fire: Extinguish teammates to gain guaranteed critical hits	It isn't clear if this would work with Jarate, Milk, healing, or airblast.
368	burn damage earns rage	additive	Phlogistinator	All fire damage charges 'Mmmph', activate to refill health and crit for several seconds	Rage appears to be connected to the weapon rather than the player, and it resets on touching a resupply cabinet.
369	tickle enemies wielding same weapon	additive	Holiday Punch	On Hit: Force enemies to laugh who are also wearing this item	Forces players to do the laugh taunt.
371	taunt success sound	additive	Boston Boom-Bringer		Causes one of several random sounds to play when taunting.
376	aiming no flinch	additive	Cozy Camper	No flinching when aiming	Sniper only.
377	aiming knockback resistance	inverted percentage	Cozy Camper	Knockback reduced by %s1% when aiming	Sniper only.
391	mystery solving time decrease	percentage	Eliminating the Impossible Set Bonus	Reduces mystery solving time by up to %s1%	Display only, does nothing in game... yet.
401	chance of hunger decrease	percentage	Dual-Purpose Fruit Set Bonus	Reduces chance of hunger by up to %s1%	Display only, does nothing in game... yet.