Once again Ubisoft have implemented their DRM rubbish (similar to that of Assassins Creed 2); You need a permanent internet connection to play the game (even single player). So if you play single player and your net cuts out guess what? You get disconnected. If your internet goes down, then you can't play the game (LITERALLY).
The game itself looks promising, but the draw back of DRM rubbish wrecks the game. I was actually considering purchasing this title until I found that out.