Single player the 1st half of the missions are a breeze but the 2nd half are epic wars. The flying missions are unlike anything in Halo before. Peobably my favorite Halo game and some great "blast from the past" screens in multiplayer.
Going to attempt Legendary now. Can only imagine how hard some levels will be...
3/3 - Hell Yeah
3/31 - Coal Chamber & Filter
5/16 - Clutch & Mastodon