In short Assassins Creed is the combonation of Prince Of Persia, Tenchu and GTA.

User Rating: 7.5 | Assassin's Creed X360
Assassin's Creed is an amazing game for many reasons; you can do anything from stealthily assassinating your way through guards to confronting over a hundred guards in direct confrontation.
Assassin's Creed's fighting is one of the best I've ever played to date, and it's so cool to watch the amazing combo's & counters unfold on the screen.
Assassin's Creed also has the graphics better than ANY game I've EVER played, games like Halo doesn't come close.
(The game also has not glitched yet.)
Assassin's creed has the largest map I've seen in any 360 game to date, with 5 separate sections, 4 of which are huge.

Assassin's Creed Is a game well worth getting, even though apparently it does glitch out a lot.

And to be fair, it does get boring rather quick, due to the lack of variety and the repetition of like same limited gameplay aspects...