The only problem I have with CoD (in Multiplayer, not campaign) is that it gets sort of redundant after a while, especially when all the "pros" do is call in choppers and nukes, neither of which are balanced at all. The game is fun at times, don't get me wrong, but it gets old after a while, especially since once you get to a certain level it's all either headshots, snipers, SMGs, or Akimbos.