About two-thirds through at the moment. Liking it far more than AC3, not nearly as much as Black Flag. Thoughts:
LOVED:
1) Setting is fantastic - both in terms of aesthetic and interest
2) Arno is a great character and having the option to set the dialogue to French is a nice touch
3) Parkour up/down makes running around more enjoyable
4) Secondary objectives aren't as annoying and generally more enjoyable
5) Co-op is surprisingly good fun
6) Viewpoints not showing all chests + cockades (I think?). Running into a few hidden ones
7) The dynamic street objectives are fairly enjoyable, if a little samey
8) The open-ended nature of the actual assassinations
HATED:
1) The glitches, obviously. Not been too frequent but it definitely feels too rough around the edges.
2) It's still too easy - I focused on upgrading the cafe first, which meant I could get the best weapons and gear early on thanks to the stupid amount of money I earned from the cafe, which made the game far too easy…
3) …as do Berserk Darts. Again. I appreciate that they're now limited in number compared to AC3 but having the Phantom Blade alongside them… I don't know. I think points 2) and 3) make it too easy to circumvent the game design in Unity. Felt like I was cheating too often.
4) Every time the story veers away from the French revolution and into the Abstergo/modern stuff, I cringe. It's beyond dreadful.
5) The map is far, far, far too cluttered without nearly enough options to untangle the mess of icons on it
6) The chests that can only be unlocked with apps or whatever. Awful.
7) The fact that it doesn't flag up how difficult chests will be to unlock until you get there, which is annoying until you get Advanced Lockpicking.
I think the main thing it's missing for me is that Black Flag's sailing was the perfect distraction away from the main game - unlocking songs, upgrading the ship, attacking forts or just sailing around the choppy sea. There's nothing in Unity that's really serving as the equivalent of that - co-op is too bitty to feel naturally integrated into the main game - and that's why it's not hitting the same notes for me.
Still enjoying Unity a lot.