A & M Mangold
Did you read the book? If yes, think of all the best moments... got them? None of them are in the movie. Not a single one. Does that mean the movie is terrible? No. When it tries to follow the book, it is rushed and makes little sense. When it goes for something different, but keeps the spirit of the books, it's quite good. So be prepared for something that doesn't make much sense, is missing great moments but has some fun stuff.