Tripwire Interactive has just announced that its monster shoot 'em up Killing Floor will be receiving a new DLC pack for free. The Heavy Metal pack will include a new map called "Foundry" and new weapons (AK-47 and a Katana) This content will be free but paid DLC will also be arriving soon with 4 new characters. Killing Floor is already a whole bunch of fun, with these new updates we can't wait to have even more. No release date yet but we are guessing "soon" means well soon.