This is a wonderful game, far surpassing the first, IMHO. The multiplayer really is the one of the best ever, and the singeplayer's pretty fun too.

I did pick up a nit from the story though SPOILER WARNING. Late in the game, when MC and Cortana get ready to go their separate ways, Cortana tells Chief that he has to leave to stop the Prophet of Truth. She says she'll stay behind and destroy the human ship if the ring is activated. Yet, when the Brute leader activates the ring, she doesn't blow the ship up. Keyes has to deactivate it.