The one thing I really do not like is the overuse of upbeat pop music during horror scenes. Even the main title does it. You have to earn that. Or be Tarantino.
And I did have to roll my eyes a little whenever they started talking about their love triangle drama of the past in the middle of a life or death crisis.
Overall though it's tense, creepy, and I'm intrigued where the secretive machinations are going.