It's actually extremely good. I'd rate it in the top 3 or 5 of all the Assassin's Creed games and probably a top 20 open world game for me.
I played the initial launch on a base PS4 and actually found the bugginess and performance problems overrated at the time. Now it's much better and on a decent-range PC it's one of the best looking games ever. Staggering stuff.
Also LOVE the implementation of the HUD, where you can click and hold the right stick to turn off the entire HUD except for your objective marker. Click and hold again to turn it back on. So perfect and makes the game so immersive. You can still stand on high biuldings and crouch to get shown all the nearby points of interest.
Assassin's Creed Syndicate is also brilliant, but it seems you already played that OP?
If I recall right, they don't tutorialise parkour very well, but when you 'get it', it's maybe the best parkour system ever in a third person game.
It's something like:
- Hold R2: Parkour horizontally in a straight line. You will hop and jump to objects at the same height in the direction you press - you won't clamber down or climb up.
- Hold R2 + Cross: Parkour upwards. You will climb up objects in the direction you press.
- Hold R2 + Circle: Parkour downards. You will clamber downards in the direction you point.
When you get the hang of this, it's fantastic. Perfectly practical and smooth and fun to use. No more hopping into walls when you want to climb, no more climbing when you want to drop. However I think it's slightly too complicated so most users probably didn't 'get' it, and they backpedalled from it in AC Origins onwards.
(Of course on Xbox contoller it's instead
RT == horizontal parkour
RT + A == parkour up
RT + B == parkour down)