Really fun game, amazing graphics, story line, music and well thought out in general.
Major problems:
Tons of bugs, and crashing issues that go unfixed until major title updates. New title updates create new bugs/crashes on top of what they had fixed.
I would avoid Ubisoft games, especially AC Valhalla for a while until everything is working properly. Its super fun to play, but can also be super annoying as some of the bugs/issues seriously impede gameplay progression.
Another major con is that once you start getting into the "middle" of the game's story line, enemy combat on normal/hard difficulty is soooo easy. There is basically zero challenge to combat once you've figured all the nuances out. Its only challenging on the hardest difficulty, and even then most fights are a joke. It was challenging up until right after the first Daughter of Lerion fight when you are basically forced to learn the combat system (20-30% into the game). Arguably the first Drengr fight you should learn some of this, but not much of it registered with me until later. After that you should never lose a fight...10v1 no problem. Kind of defeats the whole "assassin" part. You can just charge into basically any fight, any fortress and just announce you're there and start crushing everyone with ease.