Its basically a video from Gamespot with gameplay for all of the first mission up to where the E3 stage demo ended.
IW's Robert Bowling confirms we will be able to use a heartbeat sensing weapon as Soap did in the video.
You'll probably want to watch it all, but here are a few important bits to listen out for:
- The ability the later wield heartbeat sensing weapon (5:33)
- Co-Op details (6:40)
- Collector's Edition (12:17)
- New multiplayer modes (12:49)
- The new melee stance (13:00)
- A longer campaign mode (13:47)
- 'Beta?' (14:35) unfortunately they weren't allowed to talk about it at all.
Great interview IMO!