This game has been ruined. I used to love playing co-op, but now if you have no keys you can't play co-op (there is an option to play with clanmates and friends, but it is very rare anyone is available to play). The only option then is to pay, which is falling in line with the rest of this games pay to win model. Also, the new issue of the game constantly disconnecting makes it almost impossible to play, and if it does so three times (which happens A LOT), you are forced to forfeit.