Assassin's Creed is a great game, not doubt about it
That is basically Assassin's Creed in a bombshell, so anyway you go around doing informant missions, and gradually killing of each target and taking a bloodstained feather back to your Master after each successful Assassination.
But that isn't all, Assassin's Creed have many other (side missions) for you to do, such as collecting flags, killing templars and rescuing citizens. Of course that is not all. The rest is for you to discover and enjoy. Have fun with Assassin's Creed, it is a great game.
Overall this game definitely deserves a 9.5, very well done Ubisoft!