Gotta love quality looking XBLA/PSN Co-op games. This is Outland, published by Ubisoft.
I think making games where half of it is played in the shadows, is kind of a cop-out by developers. Outland still looks like a lot of fun. I'm gonna need a friend to play. Sad face.
From YouTube: Watch now the co-op trailer of Outland! Coming April 27th on Xbox Live Arcade!
Outland - Co-op trailer