Knockback

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Knockback, or push force, is the movement of a player caused by an outside source. When taking damage from any source, a player experiences an amount of knockback that generally scales directly with the power behind the attack. For example, a point-blank Scattergun blast pushes its recipient farther back than an uncharged Sniper Rifle shot. While most weapons inflict minor knockback at best, there are quite a few exceptions that inflict significant knockback and can have a dramatic effect on the battlefield. Significant sources of knockback instantly interrupt any animations the victim is in, including taunts and consumption of a lunchbox item. The Heavy takes 50% less knockback from damage sources except for Sentry Gun bullets and Scorch Shot flares.

Weapons

Several weapons deal extra, increase, or decrease knockback. For example, the Mantreads reduces knockback from incoming damage and airblasts, while the Shortstop increases the knockback from those. Some weapons have a special feature that deals knockback with little to no damage. For example, the Thermal Thruster's landing knocks back surrounding enemies, while every primary weapon for the Pyro (except the Phlogistinator) can use its compression blast to knock users back.

Damage over time / Self damage

Damage received from an adirectional source or a weapon that hurts the user pushes the recipient upward. The degree of knockback experienced scales with the damage taken and is usually minor, but can be significant enough to access previously unreachable areas.

Damage over time / Self damage sources
Bleeding
	Flying Guillotine	Boston Basher	Three-Rune Blade	Wrap Assassin	Southern Hospitality	Tribalman's Shiv
Fire
	Cow Mangler 50001	Flame Thrower2	Backburner	Degreaser	Phlogistinator	Rainblower	Nostromo Napalmer	Flare Gun2
	Detonator	Manmelter	Scorch Shot	Sharpened Volcano Fragment	Huo-Long Heater3	Huntsman2,4	Fortified Compound4
Notes	1Charge shot only.		2Includes Festive, Botkiller and Australium variants.		3Flame ring only.		4Flaming arrows only.

Special cases

• Backstabs - If by any means a player manages to survive a backstab without using the Razorback, they receive a great amount of knockback. This is most noticeable when backstabbing a stock ÜberCharged player.
• Critical hits – Launches airborne targets significantly backward.
• Bumper Cars - The bumper cars in Merasmus's Carnival of Carnage can knock each other around when two carts from opposite teams collide.

Related achievements

 Scout

Fall Classic Cause an environmental death or suicide using the Force-A-Nature's knockback.

 Demoman

He Who Celt It Use the Sticky Launcher to kill an enemy player via environmental damage.

Foundry achievements

Terminated, Too Kill a player by pushing them into the cauldron fire.

Astro-chievements

Lift-offed Push a player into the rocket's exhaust path at the end of the round.

Bereavements

Helltower: Mine Games Perform 17 environmental kills in Hell

Merasmachievements

Carnival of Carnage: Bumper Crop Kill 30 enemies by bumping their bumper cars off the tracks.

See also

• Juggling
• Slowdown