It has never been as far away of what Assassin's Creed as it is right now.
1) There is almost is so many historical innacurities that it couldn't be considered as an Assassin's Creed but more of a fantasy game.
2) To many distractions in the game that have no utility to the main plot. They are just there for you to stay longer on the game
3) The combat is too linear compared to the 4 first Assassin's Creed where there were diffirent tactics depending on your ennemy
4) No respect for Japanese Cultur or History so hard so that even the japanese government is taking offense to it !!!
5) Just way to linear where after a few hours you realise that you're not having fun playing this game that you're just going to the next point of interest and have been doing so for too long