Ever wonder what makes someone become an assassin? It's really not the kind of job one finds at a career fair. No, it's really more of a vocation that one is compelled to do. For one Ezio Auditore di Firenze, lead character of Assassin's Creed II, the reasons are very, very personal. We'd hate to spoil it for you, so go ahead and watch the latest trailer, fresh from the Tokyo Game Show.