Pros:
- large detailed open world
- beautiful environment
- A lot of missions
- most missions are pretty interesting
- pretty good scripting for characters
- can be stealth, or aggro
Cons:
- lost touch with classic assassin's creed
- little relation between present day and the past
- no emphasis between templar and assassin fight
- too many side missions
- leveling is too slow
- you actually have to grind a lot