Killing Floor's upcoming "Twisted Christmas" adds lots of disturbing Christmas content starting December 14 and ending January 14.
Players will be treated to new, horrifying Christmas monsters, a new unlockable character, some cheery new achievements and a new map, "Santa's Evil Lair." As if that wasn't enough, Team Fortress 2's Pyro is crossing over to join the festivities. Playing as the Pyro will even unlock new items for him in Team Fortress 2. See a teaser of the gory holiday fun after the break.