The AI is crappy, I suppose everyone will agree with that. For me, the game is awesome not because of the state of the art artificial intelligence but because of the high quality maps and environments, the stunning atmosphere, the cool cutscenes and special effects, the great weapons and vehicles, and the fact that despite the AI the game is still pretty challenging. I've certainly enjoyed playing through the mini-campaign and the best thing is, every element I've just mentioned that doesn't concern AI will be carried over to the upcoming multiplayer release.