Played it at launch on PC and finished it, think I spent about 30 or so hours. It is a very enjoyable game. It’s visually beautiful, traversal is fun and fluid, and the combat can be tricky but never hard enough to put me off. Always felt rewarding to get a good run of clean stealth kills. Story I can take or leave, but I don’t play that style of game for the story. I don’t believe you will miss anything having not seen the movies.
Got a bit samey towards the end as most of these open world style games do. I’ll be revisiting it for the DLC for sure.
If you enjoyed FarCry 3 or 4 (or just enjoy that “conquer the map by capturing the base” style gameplay) I say it is worth picking up. The only downside (on PC) is the Ubi launcher. Could really do with a steam release.