Assassin's Creed II, on the other hand, was pretty damn good. I don't recall ever experiencing such a leap in overall playability as I did from I to II. It seems they really learned from the first and made it all better. Ezio moved more fluidly, the cities were bigger and better looking, the voice acting was much better, the story expounded on the last and got pretty interesting, the fighting worked better, they included more customization elements, the missions had FAAARRR more variety, and you could actually stealthly assassinate people!
The only knock that I could bring up on this one was that I got more into the side missions of finding the 6 seals for Altair's armor and ESPECIALLY finding the truth that Subject 16 had hidden in the Animus. Halfway through the game I was hardly even paying attention to the main storyline in lieu of finding all the glyphs and decoding 'the truth'.
Also, although original in story, it's basically Grand Theft Auto dealing with assassins instead of gangsters. Not that I have an issue with that, GTA was revolutionary in its style, just saying they lose a bit for originality there.
"I don't know how to put this...but I'm kind of a big deal"