Codes can potentially be snagged in a variety of ways, as collected by Joystiq.
- Register at KaneandLynch.com
- Watch the Xbox 360 Dashboard on your console, you might get a chance "soon"
- Check 1UP for a chance at 1 of 1,000 codes.
The demo includes some singleplayer from mission #4, which takes place in and around a restaurant in Shanghai along with some multiplayer action. I got a chance to play a bit of this mission at E3 along with learning about the game's multiplayer modes. Then, I wrote a preview. Read that preview!