I’ve put a couple of hours in so far and am enjoying the game play quite a bit. It’s a mix of Assassins Creed and Arkham City while maybe not handling the parkour and combat elements quite as well, they both work well and are fun. I’m not very far into the story yet, but so far it’s good. The voice acting is well done and the cutscenes do a good job of pulling you into the story. There is a reasonably robust upgrade system for both skills and weapons. You unlock rune slots as you progress and then get runes from killing enemy Captains. Those Captains will also become more powerful if they kill you, even regular grunts will get promoted for killing you.
Overall I think this game is well worth picking up if you are a fan of the series or just like open world, story driven games.