You've seen this premise before. It doesn't particularly go out of its way to bring something new to the revenge-thriller genre. The "twists" are obvious and uncomplicated. The acting is far above the cringe-worthy B-movie crap that the 1-star reviews would have you believe this is, and there are occasional moments of excellent tension and violence, but it's not very memorable overall. It's by no means a bad movie, however--even if I was really hoping to be surprised with a twist ending. (No such luck.) Like many thrillers, it falls apart in the third act and tries to wrap things up too quickly and neatly.
There are far worse examples of the genre out there. If you're in the mood for watching college girls hurt bad people and get in over their heads, go for it.
There are far worse examples of the genre out there. If you're in the mood for watching college girls hurt bad people and get in over their heads, go for it.