They removed the original Co-op mode and replaced it with Dungeons. You have 3 chances a day to play with random players and complete objectives. You can play with a friend or clan mate if they actually still play this. It's either that or pvp. The game was one I could recommend, but now I just can't. It's not enjoyable. Co-op was the main reason I played the game. Seriously, 3 keys in a day and you have to wait until the next day if you use them. Not like it's an optional part of co-op.