Fun to play in co-op, shooting feels nice, but overall nothing special for me, and the heroic deaths of all the characters sit wrong with me. Folks in the YouTube comments of the ending sound like they wanna enlist right now. But I guess the military glorification happens in almost every game of this genre, and Halo isn't really the main suspect (cough Call of Duty cough).
This was my first Halo game, I consider it a good start.