Received the game (limited edition) on Christmas Day and finished it on Legendary (co-op of course) 11 hours later.
Love it to bits! Worth the wait! I love the Prometheans, I love the story, I love the Infinity War Games and Episodes.
I had a blast when I found out there was an old Halo 3 map in BTB (Valhalla --> Ragnarok) O M F G!!!
I tried to play Spartan Ops on Legendary on my own, uh let do that again later, m'kay?
Anyways, love the game and can't wait to see what's next, especially the episodes with Dr C. Halsey...