Zombie Army Trilogy - PlayStation 4 Intense Solo & Co-Op Campaign - Battle back-to-back through 15 gut-wrenching missions spanning THREE epic campaigns. Fight alone or in online co-op for 2-4 players. Brutal Horde Mode - Face off against unlimited and increasingly difficult waves of enemies in the ultimate survival challenge. Play by yourself or in a 2-4 player co-op across 5 dedicated maps. Deadly Survivors. Deadlier Arsenal - Fight elite sniper, Karl Fairburne or one of EIGHT playable heroes including 4 new female characters, armed with over 25 iconic weapons and explosive traps. X-ray Kill Cam & Zombie Dismemberment - See your bullets riddle the putrid insides of the undead as the infamous X-ray Kill Camera returns, and use tactical zombie dismemberment to remove body parts to disarm or slow your targets.