The Backburner is a Level 10 Flamethrower that is unlockable after completing fifteen Pyro achievements, excluding 'Milestone 1'. The Backburner deals 15% more damage than the Flamethrower and also always deals a critical from behind the enemy, approximately a 90 angle from the center of their back, but it loses the ability to use the compression blast secondary fire.
After being released the Backburner added 50 health to the Pyro but this has been nerfed in subsequent updates.
|.357 Magnum, AR2 Pulse Rifle, Crossbow, Crowbar, Gravity Gun, Mega Gravity Gun, Pistol, RPG, SMG, Shotgun, Tau Cannon, .357 Revolver,|
|Portal Gun, Turret, Rocket Turret|
|Scattergun, Pistol, Bat, Rocket Launcher, Shotgun, Shovel, Flamethrower, Backburner. Flare Gun, Fire Axe, Axtinguisher, Grenade Launcher, Stickybomb Launcher, Bottle, Minigun, Natascha, Sandvich, Fists, K.G.B, Wrench, Syringe Gun, Blutsauger, Medigun, Kritzkrieg, Bonesaw, Übersaw, Sniper Rifle, Submachine Gun, Kukri, Revolver, Electro Sapper, Knife|