The Nobles did die, You can stand next to Emile's dead body.... and 6 did get a crap load of elites after him, But if you look the start of the game it is the ending of the game....
Any way. I didn't care much for the ending. Yes it put the loop in there for the first halo game, but I'm used to have to run from a falling apart, or about to explode ring. Not Here is your package, now let me go shot that corvette for you.
Also there is no hidden skulls, which I liked going and finding them.
The team did bother me somewhat. They just stand there and shot without killing a thing or did I miss something? Another thing, is that they just disappear sometimes. My friend and I tried to figure out where they go, like Kat in Mission 2. and they just stand out somewhere leaving you going in alone. Which doesn't make since...
Well other than that I like the game.