We are a bit late with this one, however if you visit  Xbox LIVE Marketplace you can now download the demo for Army of Two: The 40th Day.

 

The game itself will be released 13th January 2010 and for people who pre-order the title (check how to get this deal here: www.eastore.com) they will have exclusive access to the game’s all-new explosive bonus multi-player mode, ‘Extraction,’ at launch.

 

This mode will be unlocked for all other players one month after the game ships. Extraction Mode pits a team of four players against a series of unique enemy waves as they move from point to point in the ruined city. Players must strategize as a unified team to combat the different forces of the 40th Day Initiative while trying to get out alive.