Well, I've only played a small portion of it, of course -- up to the first cutscene -- and it's...okay. There's a lot that the game has going for it, but it also exhibits many of the symptoms you might have come to expect from Ubisoft. The framerate is...ew, and the collision detection is somewhat questionable. Also the controls take a bit getting used to because Altair does most of the work for you as you merely guide him. But the mini games are pretty cool. Pick-pocketing is less gimmicky than I'd anticipated, though the interrogations are a blatant rip-off of EBA / Ouedan.
The game seems to be set up to be very linear, but I think it's going to be a fun game, all the same. Can't say it does much better (so far) than Pirates of the Caribbean did on the DS, although the sword play is certainly much more entertaining. I especially like the counter-attack moves. If you counter and get a dude on the ground, you can then do an instant kill on him while he's down.
More later...Â
P.S. -- The load times are abhorrent.