Too many mistakes. The assassins do not cut their fingers since Altair's times and they couldn't even cut the right fingers. Everyones knows they used to cut the left hand not the right hand.
Also, they have the creed wrong and don't even get me started on the brainwash "everything for the creed" ideology. That is not the way of the assassins. Actors did splendid work though. Too bad directors and writers did not do they research properly.
