A borderline watchable, mess of a film. Good idea, poorly executed, with a turgid and inconsistent pacing.
Little, to no, character development or background makes rooting for the "young teens" in this film near impossible (also 2 of these so called young people look older than me and I'm 40).
Saving grace of the film is some decent and practical special effects, good death scenes (a must for a slasher film) and some gnarly bad guys just about put this film one above unwatchable.
It feels a lot longer than it's relatively short run time and has zero re-warch value.
Have a beer, eat some food and chat to friends on the phone while this is on in the background and it's fine. Just don't expect to be scared or entertained very much.