The story was great, and I loved the theme. For me it's the best Assassin's Creed to date, even if occasionally things felt like they needed more explanation in character dialogues. There were quite a few minor bugs, but nothing I came across that was gamebreaking. It's still a banger imo, also the graphics are stunning.
Edit: To give you an idea of gametime, I did mainly story with a generous handful of side missions, wracking up a total of 80hours