I've had high hopes for Assassin's Creed when I first heard about it, but holy crap was I disappointed.
It had great setting and atmosphere, but all that was ruined by the most dull and boring gameplay ever.
The game basically plays itself, you just have to hold one button to perform all the acrobatics. Where's fun in that?
"Stealth" system was compleatly retarded as well...
If you're being chased by guards:
a) Hide amongst monks, monks blind guards.
b) Sit on a bench! Benches instantly wipe guards memory!
And what's with the haystack jumps?
Sorry about that little rant
As you can see I'm not very excited about Assassin's Creed 2, because I doubt that it will differ much from it's predecessor. Agent 47 > Altair