Constant errors, freezing of your Xbox, freezing of just the game, losing your host after you wait 5 minutes in a lobby to start playing the game, bugs (map errors, can't prestige weapons, told you have earned tokens when you haven't, If you're in Xbox Party with someone and not in a COD party - it will force you into a COD party with them, etc.), game chat rarely works, problems with your Xbox freezing up when you're in an Xbox Party with friends, I can't even list all the problems I've had with this game since its release