This game is hard for all the wrong reasons - Poor camera angles, poor combat system and below avg graffix.
This is your classic bad action adventure game based on random popular movie. See: Pirates of Caribean, Narnia, golden compass, Lord of the Rings, etc etc this is like a plague.
The game itself is faily fun and playing with a co-op added to that fun. However, after you both find yourself replaying levels because you died and the only reason was because you couldnt attack in the right direction, or you couldnt see what was going on - you dont exactly want to keep playing.
In the end - this game wouldnt be bad to rent for a night for $5 and plow thru it, but you will probably quit out of frustration before you can even get that far.
You are much better off popping in the first prince of persia game or something like that rather than playing a bad game like this.