Really enjoyed this game (360 verison) and for the price you won't be out much if you don't like it.
It is pretty difficult though, my brother was never able to finish it. (I didn't have any problems, ymmv I suppose.)
I will second what JUDOHAWK said, once you get used to the grappling arm the game as a whole just clicks, didn't take any time at all for me to adjust to it. I think it may have given my brother some trouble at first, not sure though.