Deadmans come to you, trying to isolate you from the winter mountain where the snowstorm drives you. The purpose is to remain alive for as long as possible. Zombies have weaknesses. Zombies attacked with weakness are staggered and suffer considerable damage You have to throw a flash bang in order to know where the weaknesses of the zombies. Flash bangs can not kill zombies, but they can stun the zombies for a while and weak areas are exposed.