It looks broken as fuck to me but okay.
If the ia can't notice when allies get murdered throught a paper door when they are that close i call that broken.
Also the enemies really see you if you go to them in a perfect straight line and i was not aware that mongols used this during war
They are literally blind and deaf.
Maybe the ia totally bugged in this video, it haloen to the best stealth games too but that is not a good showing.
Also i'm a bit bitter that i have to wait until tonight to play the game