It was really good actually, especially the opening scene and the second half. It was a bit slow during the first half at times though, I know it's meant to be all part of his character and the film and everything but it was a painful watching the conversations with the girl (can't remember her name) where they'd exchange a couple of words in a minute. I did like the main character though, and the way they did it where they kept him a mystery, you could say it'd be nice to know a bit more about him but that would kind of defeat the point, although it does make the love story a bit weird, I don't see any real reason why she would be attracted to him tbh lol
The sudden really violent scenes were a bit surprising considering the first half of the film, maybe it was a bit unnecessary but I liked how ruthless it all was, and yeah like others have said the soundtrack was really good, and that's not something I normally care that much about in a film, I'd give it 8/10 overall