Very Very fun, its sort of like playing The Outfit again with just lots more to do.
I haven't beaten the story mode yet--I have been playing head to head with my brother all afternoon and its awesome! Like I mentioned before It plays like The Outfit did. Some of you may have played that before. Basically a battlefield and as the battle rages on the entire world becomes a wasteland and the buildings are destroyed.
Repelling wave after wave of the funny looking German guys is incredibly funny too.
When you are flying in a bomber plane you can see the bedroom around what you are doing and that ads to some of the fun. There are certain things that would make you think this game was dumb if not for the fact that they emphasize that you are in a model of a world.