I got to play for about 2 hours on Monday night when I got back from the store. Had to catch a plane for a work trip at 7am, so I had to be a good responsible adult and get at least a few hours of sleep.
Haven't got to play any more since my stupid plan flight back home last night was an hour and half delayed.
I actually had hoped to take the '360 with me on the trip, and play at the hotel room, but I called the hotel in advanced and asked if their TVs had RCA inputs. Not only did they not have RCAs, but they had the stupid lock system crap on the coax cables as well, so I wouldn't have even been able to use an RF adapter. Very disappointed.
Now...for the game though....I played about an hour of single player (up through getting on the Pelican and going to the UNSC and meeting up with Keyes). Then I played about an hour of multiplayer. Anybody been able to play a multiplayer game with more than 4 people? It seemed that LIVE was reporting something like 16000 people on Halo 3 at the time, but wouldn't populate more than 4 people into the game. Was really annoying. I'd like to play some huge 16 player free-for-all Slayer matches.
Other than that, it's REALLY cool. I like the new weapons. The new control scheme took a bit to get used to, but I'm liking that as well now. The hammer IS pretty sweet. I like that you can only carry 2 of each grenade now. Keeps people who are really good with the plasmas (like me, usually) from abusing them too much, lol.
Planning to have some friends over this weekend for some multiplayer action. Can't wait!