I've been fucking loving it so far, I burned through the first disc (didn't know it was split up on 360) in one sitting. I'm just getting to the stage of the game now where the enemies get heavily-armored though, so I'm hoping shit doesn't get super frustrating. New cutscenes are super sick though, everything moves along so seamlessly.
Multiplayer seems like a real let-down so far, but I won't judge too prematurely. Being able to see someones gamertag from the other side of the map just turns everyone into a bunch of headless chickens, team deathmatch seems like a joke. Hopefully the other game modes are fun, but if it's anything like GTA IV, no one will touch them.