Just look at my CE review for a general overview of the campaign but in terms of it's own game CEA sits in a weird spot.

The new visuals feel pretty neat at best and incredibly out of place at worst, a big mixed bag on that front. Although the feature to switch between new and old graphics is incredibly good.

The multiplayer map pack for Reach was very nice though, added a ton more maps to play and all felt very good while having interesting renditions of the classics.