My one problem wit hthe story [spoilers]

I loved the idea of a the subset of humanity that preys on humans (violently, not psuedo-orgasmically like vampires). My problem was the setup with how they got to the training facility. The movie starts out like a typically 20ish types-slasher and wildly improbable how they end up at the facility. I would've liked an angle where we see Amber deliberately being setup to end up at the facility with her friends, making killing them and watching them be killed more of a rite of passage.

Overall, I liked the movie and really like the performance of the lead (not to mention she looks damned good running in slo-mo!).

Amy: I swear to God...I swear to God! That is NOT how you treat your human!