I just bought it today and played through the prolouge part. Its amazing so far. The controls work great. Graphics are incredible (if only my tv wasn't a piece of shit). The story so far is good as well. Once you play tell me what you think of it as well! I'll try and give an update once I get further in the game.
EDIT: I just got to use the grappler to swing across small gaps that you can't jump. It definately takes some practice to get the hang of it... I think they could have made it alittle easier to use. But once you get the hang of it, its no problem.
*starts strangling you* I've wanted that game forever! Gimme your copy! >:O