While it certainly suffers some pitfalls, overall it’s a fairly new and well-told American style fable. An interesting creature idea (that only suffered a little from limited budget) with humanizing, more drama than horror tones.
Excellent direction, with a subtle yet intense performance from Gosling. By contrast, the escalation of violence in the second half of the film is all the more visceral and intense. The visual style and music give that little extra push from good to great.