Anyone playing it? I've been very impressed with it. The lack of AA was disappointing at first but after a week of play, I don't even notice it anymore. I think it's a feature we've all gotten too used to. This game is hard!!! I've been stuck on the second mission for a week now. I can barely manage to make it to the presidents limo with an intact team and at least a litle bit of ammo and I always get wasted when I have to go back to the plaza to distract the rebel position. Any tips?