Those of you that are used to American-style movies, don't watch this because you're probably going to be bored. People, like me, who are used to weird Japanese movie-styles will mildly enjoy this movie. The editing is very strange, sometimes you get the impression that your DVD has skipped, the sound is also weird in some places, I can't explain exactly what's wrong with it but watch this film and you'll know what I mean.
I recently watched "Imprint". That's an episode in the "Masters Of Horror"-series directed by Takashi Miike. THAT's what I call a strong and violent film. It was awesome!
Don't expect too much and you will be entertained. But not as much as you expected. A decent watch. Nothing to keep.