The less you know, the better it is! Go in unexpecting and you'll have a great time: gore, humor and many WTF? moments. I really enjoyed myself, so did the film critics (it was a press screening I went to) next to me.
Very well acted movie, Gosling once again showing he's an acting force to be reckoned with! Reminded me of movies like 'Fresh' and 'Clockers' but without the thriller element. One of those movies that sticks with you.