I would say the games quite average. The gameplay is kind of similar to Assassins Creed and Hitman but nowhere as near as exciting as them. The characters movements doesnt feel real. Graphics wise the game is quite decent. Character models are detailed and praise worthy.
The innovative thing about this game is its use of color. The heavy Nazi controlled areas are black and white with the exception of red Nazi symbols, blue Maqui symbols, lights, fire, blood and irises color of character's eyes. This was pretty neat and gives the environment a dark, gritty and noir feel. Color can be restored in an area by significantly reducing German influence in that area.
Another thing I liked was idle character animation. When left idle Sean will light a cigarette with a lighter and start smoking. It really looks cool in some of those B&W areas when Sean is disguised in a Nazi uniform amidst other Nazi soldiers.
The main reason I played this game is one, I like France(Bonjour!). Secondly I liked Inglourious Basterds and wanted to have a feel of "Once upon a time in Nazi occupied France".
