Great graphics and animations but the most important thing is missing. It isn't fun to play.
The cities are very detailed as are the character models. In HD the game look beautiful. Sadly that's where the good stops.
The game play is frustrating and boring. You basically have to do the same mission 9 times over. For such a vast virtual playground there isn't much to do. The missions are boring and repetitive. The combat system is frustrating and inconsistent.
The story is also a disappointment. They give away the only twist at the very beginning and the long winded cut scenes are unbearable. You just want to skip them but you can't.
The poor sound is the most amazing thing about AC. With such amazing visuals you would think that great sound would go hand in hand. Untrue in this case as the voice acting is average, the variety of NPC's comments is slim, and the musical score is only slightly pleasant to listen to.
This game typifies rental if a game ever did. You get sick of it after 2-3 hours and if you really want to beat it, it only takes 10 or so. Don't waste your 60 bucks!