Sledgehammer Games today revealed a trailer for Call of Duty: Advanced Warfare’s co-op mode, which we all knew was there but knew nothing about. Well, now we do! The game’s co-op mode is called Exo Survival and can hold up to four players. You’ll team up with your mates to fend off waves of enemies which also include mechs. It is probably safe to assume that the waves will become harder to counter as the level progresses. The game’s co-op mode features along with Advanced Warfare’s single-player and multiplayer mode. Advanced Warfare launches November 4 for Xbox 360, Xbox One, PlayStation 3, PlayStation 4, and PC.