I agree with everything except the co op. I enjoyed that, honestly. Became a contest between my friends on who could kill the most the quickest and stealthiest. It was like playing Tenchu Z again.I played through Unity recently and holy fuck is it a chore to play through. Paris look amazing but they don't do anything with the french revolution setting. It is the opposite of AC3 issues, where you took part in everything with the american revolution. Here, they do fuck all. Also, fuck the coop missions.
I am also playing through black flag again and that game still holds up, even if it become sammy after a while.