The best co-op game, bar none. This game has like every idea you could have for a setting and mechanic thrown into it and it somehow all works. It's great. My biggest issue is that some ideas feel a bit underdeveloped, and while that does serve to assist the rapid pace, makes a few areas feel a tad unfulfilled. Secondly, the conclusion is a bit weak gameplay wise. There could have been one final area that uses a ton of the game's gimmicks for a more satisfying climax. Otherwise, very fun.