The grainy atmosphere of some nicely shot locations is completely undone when the 'guys' turn up. Horny teens are one thing, it seems obligatory for films like this, but the two gate-crashing twenty-something adolescents arrive at a sorority party and the viewer - or this viewer at least - is aching for the film's antagonist to graphically wipe the smug grin off the faces of these cretins. The girls, by comparison, are more concerned with semesters and exams and that kind of thing - before mild sex is introduced to fill in more time before anything interesting happens.
One of the freedoms of low budget films like this is that they don't have to go down the same predictable routes as more mainstream horrors. Many exercise the freedom they have by producing something different and interesting - this one doesn't.
The kills are arbitrary, we know nothing about the murderer, and characters are tepid. Against that, it's nicely directed and the moments of gore are fairly convincing. My score is 4 out of 10.