Tried it a bit longer and nope, it's going in for trade when Mass Effect is out. Such a shame but it's as if they got to a point and said "that's enough, release it".
There's no satisfaction in completing anything; if there's a complex set of jumps, all you do is hold down RT and A, and the game does the jumps for you. Most frustrating of all, to kill someone, it's just a case of holding down RT and pressing X in a rhythm. You don't aim, you don't really try, you just press the button a few times and he does this spectacular move to kill the guy. It's not "you" that's doing it, it's random what move is pulled off (you don't even have to aim), so it's just completely unsatisfactory.
The AI in places is brilliant; for example, cut-scenes aren't always things that you just watch. You can change the event by running and attacking someone, or predicting something. Which is great. But even the cut-scenes are a bit screwed by this "memory glitches" feature. When the screen flashes, press any button and you see what's going on from another perspective. Does it change anything? No. Is there any point? No. But if you catch these flashes and press on 85% of the cut-scenes, you get an achievement. What in the name of God is the point in that?
The storyline is, as far as I'm concerned, boring as fuck, and the game is confusing as a whole. I was stuck on a particular section for two minutes, with a guy saying "it's this way, I'm over here, let's go, this way" but I'm looking around and nobody's mouth is moving. So I've got no fucking idea who's talking to me. This happens over and over. There was a training setup after this, where I fought for about 5 minutes and sliced this guy literally 100 times waiting for him to die, before I realised that there is no end to it and you just quit whenever you've had enough. Very poor.
Such a shame, great AI and great graphics, but it involves no skill whatsoever to play the game. It should have been an animated film.