Not had any problems with stupid AI in the campaign (completed the game solo on normal after my connection lagged so hard I got dumped out of campaign with Paul and Dan lol) At least nothing like the Arbiter kicking a crate in to my face which is what happened on Halo 3. Biggest gripe was the marine shooting the missile hog (which we only get to use in one level boo that was like awesome) shooting a rock point blank and killing me and the one time Jun actually sniped me as he sniped covies outside swordbase, then again she sniped me just as I failed to get an assasination takedown on a brute.

I really enjoyed the campaign on this one, certainly the looks of the characters and the voice acting (even though the cast list for ODST was better) seemed to be the best in any halo game so far. Though Bungie said in interviews they know players don't like to go back over previous territories again there was a fair amount of backtracking. Personally though I know I'm likely to do it or at least attempt it I don't fancy the final levels on legendary solo, they're going to prove a bitch lol especially when checkpoints seem quite few and far between.