Tripwire has released the third free content pack for their co-op multiplayer zombie-shoot, Killing Floor, as well as a new 99p character pack, which is currently available at half price. 49p! That’s a bag of crisps. The Incendiary pack brings a new weapon and four new maps, as well as upgrades for the Firebug perk. Bonanza! A video of some professional-sounding people completing the West London level of killing floor awaits your judgement beneath.