Finally got around to beating it, watching the credits roll now. Im impressed, I actually found all of the terminals and 3-4 skulls. It was a blast replaying this game, and things like terminals, skulls and the Kinect analyze feature added some awesome newness, particularly the terminals.
Anyways, my impressions are overall very positive, with a few complaints about certain re-imagining of visuals. I may write out something more detailed later, but I think one thing that bugged me was the re-using of so many Reach assets when I would have rather had the original look but modernized, such as helmeted Jackals, CE marines, etc. Also, the flood could have looked better, I was a little let down with them.
But yeah, this game is beautiful, while it has its awkward looking, almost retro moments, other times it looks amazing. Sometimes the lighting and shadows reacting with the enemies and environments made me say wow.
Time to go for the achievements I missed..