Mechanically speaking the game is a step up from Styx: Master of Shadows. There are less bugs and things are much more intuitive. The levels also feel more free to roam around, in a sense, though at the same time less memorable. Where the game really struggles, however, is the story which is a big step down from the previous installment.

There is no real sense of an overarching narrative and characters are dropped without any real warning or meaning. And the end is so sudden and anti-climactic that I was honestly thinking that I must have missed something and that there was a secred "true ending" or something. But no, the game just ends in a very unsatisfying way.

If you loved the stealth aspects of the previous game, but didn't care about the story, then this game is a strong recommendation.

In short:
Great gameplay mechanics
Weak story