Its multiplayer is fucking ACE, it's right on the top with Bad Company 2 and L4D tbh.
GameInformer ReviewLayered on top of this massive single-player experience is a story-tied multiplayer game unlike any other I’ve played. The Templars are using their Animus machines to train new recruits, and players adopt the role of these trainees to wander the streets of Renaissance Italy as they learn the arts of subtlety, cunning, and murder. In the tense and highly replayable Wanted mode, players each have one target and one pursuer. Naturally, you must kill your target while avoiding the pursuit of your hunter. This simple paradigm gains complexity by encouraging stealth, rewarding well-executed kills, and demanding smart strategic movement over twitch mechanics. Matches rapidly transform from wild runs around the map to careful mind games against your opponents. The progression system awards your exploits with new character skins, abilities, score bonuses, and even game modes. These additional modes are basically variations on the original concept, but still make for a nice change of pace.