The campaign was pretty fun, shorter than I expected, and not terribly difficult, even on legendary. The disposition of the Didact confuses me because if he is Bornstellar (not saying this most recent Didact is, but I have no reason to believe otherwise at this point), why does he despise humanity so? After all the work he did with humans? I suppose the 343i writers aren't following deep Halo fiction awfully deep (which they do not have to), so I guess it's safe to assume that "Forerunner = Bad" in all circumstances when it comes to the game. And it would have been nice to see the Librarian, such an important figure in Halo lore, play a larger part in the game. Nevertheless, still fun, but I like past titles a little better.