So, based purely on playing the game itself, i give it a 10. Instead of just having a sword and a dagger, the ability to buy and upgrade weapons, to save for the next one, is great! Plus the ability to upgrade the Villa (Sort of home town) in order to gain more revenue is good as. The Combat system remains largely unchanged, but larger scale of enemy difficulties makes for some more challenging and often more enjoyable fights. And the events that are taking place interest you and draw you in.
There is more to do, and a wider, more diverse range of directions to go, so it is not the same things over and over again. The story, FANTASTIC, and WAY better than Assassins creed 1. The Free running, excellent, some tweaks made to improve it, and endless fun to be had. I am rating this purely on the game itself, not the Ubisoft DRM (which i didn't need to worry about because i cracked the game).