I wish they had stuck to the book better. Since the main characters were supposed to be teens it wasn't working well with me. And I don't remember reading anything about them hunting people down in the woods. I remember them saying not to kill mortal people because if you get the taste of blood you will go wild or something.
But, if you don't compare the movie to the book, then it was really good. I liked the ending to the movie. I also liked the ending to the book.
The movie alone was fine. Don't think I would watch it again though because it disappointed me, but it was a fine movie.