6/10, buy Bloodborne instead.
Well, of course it's not as good as Bloodborne. There are as many games as I can count on one finger that are as good as Bloodborne (well, maybe two fingers, but the other game isn't out in the West yet).
Anyway, I just beat the game. I found it's really great, but it does have a lot of problems.
The vast majority of the sidequests are awful. The absolute worst are the "find x things in the blue circle."
The storytelling is really disjointed. Strangely enough, the ship from a big open world to a linear, disjointed, dark story in the second half reminded me strangely of Xenogears.
But the characters are generally very good, the combat is enjoyable even though it is overly reliant on QTEs, and the game features some of the best town and dungeon design since the PS1 days of Final Fantasy.