i dont think that its the best game ever couse the missions repeat a lot. in every town you just had to climb towers and then go kill some bad guys, run and jump til you get the boss mission to kill some guy and take his blood on a feather and run again. however the fighting was great.
AC2 seems like it will finally fix AC1's problems i.e. the repetitive nature. Also, AC2 has just as interesting a setting as the first.
On another note, I actually saw what the first five minutes of AC2 will be:
*SPOILERS* It has been one hour since the Templars and scientists left you in the room, and you have made up your mind: time to escape. You escape the room and the building. (How Ezio and the Animus fit into this I will not tell)
YAY!! THE BEGINNING IS SOOOOOO MUCH BETTER THAN THE FIRST GAME'S ENDING!!!!!!!!!!!!!