Pros
- Large world
- Actual stealth missions
- Many side missions
- You can run through trees
- You get to virtually kill lots of British
- History lessons (which are pretty accurate - obviously ignoring the assassin's fictional role)
- Optional micro-management mini games (if that's your thing - it is for me)
- Simplified controls
- Virtually hunting animals is awesome
- Naval Warfare (no not your belly button - I'm talking ships)
Cons
- Optional objectives briefly show up on screen and are easy to miss. Meaning if you want to perfect the game you have to replay missions where you would have got 100% if you hadn't missed the info.
- More likely to climb up the side of a building by accident than before. Despite being the first title Ubisoft has apparently fixed it.
- Underground. Very boring. You may get some kind of very mild horror thrill from walking in the dark, but there is nothing to really make it entertaining. In previous AC games there were underground climbing puzzles, which were much more fun.
Conclusion
BUY IT. Also, if you are reading this in the future and there have been non-numbered Assassin's Creed games come out; they were probably rush jobs (as Revelations and Brotherhood were). So get this one instead.