In the words of a friend of mine, this is the shittiest masterpiece I've ever played.
It's unpolished, repetitive, has so many technical issues and even the story has some very low points, I'd say the only consistently good part is Zero and Mikhail's relationship and dialogue. But it still manages to be such an unique and interesting experience that I could praise it for days, and I don't think I'll ever play anything quite like this.