Starting on December 28th, ResidentEvil.net will start doling out classic "RE"-style costumes for participants in the Zombie Mayhem event. To get one of the costumes, it's just going to take 15 million zombie kills.
Oh, you don't have to do it alone: the event will track all participating "Resident Evil 6" players' kills of zombies, Bloodhots, Shriekers, Whopper, Whopper Supreme, and zombie dogs across campaign and multiplayer modes of the game. If the target is reached, you get to pick out one of the costumes which will be unlocked at the end of January. You'll also need to set up an account with ResidentEvil.net to participate, so get jumping if you want to help reach the total.