Somewhat surprisingly, this game is pretty great. I am about 4 hours in right now and it is highly entertaining.
Like the review in CNet says, "just like with zombies, you dont ever get sick of killing nazis"
Pretty interesting alternative history plotline going on which is more than enough to keep you engaged in the awesome shooting action. The game was built on the Rage engine, so if you played that on the 360, the combat definitely feels a bit like it. The atmosphere is cool, the guns are great and the music is well done as well.
This is pretty much all you need to know: Duel Wield Automatic Shotguns. Turns nazis into pudding in a fraction of a second.