The picture is amazing, I can feel how this really works. It pays its tributes to horror, and the brutality of some of the scenes is frightening. But nevertheless, it works in a fantastic way. The only thing that I didn't like was that there was a bit too much music at times, which confused me and put the whole thing a bit in music video land.
It's definitively worth a very intensive study of the underlying structure and the scripts in early drafts. The very little talking makes this very intense and now that I think about it: What the hell was Gosling working on in his appartment? Some engine part? Can't remember if it came back later in the film.
The last scene where Gosling wakes up puts the whole film on a totally new level and gives the character an angelic quality. Another tribute to horror?
Cinematography is breathtaking and the colors were amazing.