complete the gate

complete the village

complete the swamp

complete every battle scene

complete the game without normal ammo reaching zero

get 666 kills

make 666 zombies explode

rescue magliano

rescue fleming

rescue duffy

rescue cooper

defeat hellman

complete all of julie's quests

complete all of winston's quests

complete the secret quest

complete all quests

get the best outcome in the graveyard

normal difficulty

bloodthirsty difficulty

cannibal difficulty

complete the game without aborting a mission

purchase your first item

purchase all behind the scenes videos

purchase all behind the scenes photos

purchase all music tracks

purchase all documents

unlock all game videos

unlock all bonus content