I was surprised to see most theaters never got this film up. I decided to wait for blu-ray because I did not have time to watch but wanted to. I have to say, for something low budget as documentary said, It was pretty intense and well thought out.
If your on the fence, buy the movie. Its worth it. I dont even like gore but they did it pretty nicely, artsy rather than clumsy. If you can't stand blood in the movie screen, I caution you not to buy it though.
My only complaint is how come a sequel has not been planned yet?