they show us what's behind the curtain WAY too early. like, the first scene, even. and then repeatedly throughout the movie. what they should have done was have a straight horror story that was strong enough to stand alone, and THEN slowly start peeling back the layers. because their "teenagers go to a cabin in the woods for some reason" story was so weak and cliche (on purpose maybe, like to dig at the genre, but even then it was a mistake), they almost had to shout it out right away that THERE'S SO MUCH MORE GOING ON HERE! otherwise, the audience is sound asleep.