the second half of the film added a lot of substance and character development and revs up the action...but the first half of the film is a joke. it genuinely felt as though it was a prolonged joke. in the film cabin in the woods, i had a similar feeling, where the first half was cliched and chock full of tropes. but in the end it was amazing. this film had all the predictability and tropes of a slasher horror, but a far less redeeming second half. gets 3 stars for the second half and the people saying its incredible MUST be fake or braindead.