Sorry to say but this one is the worst in the franchise.
The game starts off really slow and the characters do not possess the charm of the previous Assassin's Creed game characters,the cities are boring,the game is bugged and many people are encountering bugs everywhere,the combat and movement has been simplified and the side activities are useless as i completed the game without taking part in any of the side activities.
In the end i was totally let down first the locaton was not fit for an Assassin's Creed game,secondly Connor is such a crybaby and is quite annoying neither does he had the charm of Ezio nor the commanding demeanour of Altair on top of that the story was quite a jumbled mess and like one of the poster mentioned this game tried to be Red Dead Redemption(though does not even comes close to it)at some points as the era was kind of same but failed miserably.
So please UBISOFT please give us an Assassin's Creed game which rivals the AC2 in its story,fun and meaningful side activities,great looking locales and charming characters.Though good work on FarCry 3 and best of luck for your future.