I've played all the AC games and this one was by far the best.
I never felt bored, always felt I had something to do, the story was unbelievable (the choices were a big improvement from the AC:Origins), the side-missions are really embracing, the combat is AMAZING and the game is visually stunning.
Please, if you don't know if this game is for you, play for a few hours and YOU WILL GET HOOKED.
I'm thinking about playing it again.