I saw the movie at it's premiere at the Fantasy Filmfest in Munich, Germany, and I have to say it's very entertaining.
The movie itself is not a masterpiece by means of production design, acting, editing, directing or anything else. It is more in the B to C category. Trash, that is. But it is not at all pretending to be anything else. Just the other way around, it embraces it's trashiness by having the villain jumping around in ballet-like moves and similar things. This is one thing that makes this movie very likable. The other is that it is just so funny. If you are not offended by extreme violence and gore.
The theater was packed with the special kind of audience that is attracted to the Fantasy Film Fest, the kind of audience that will applaud and cheer when a head gets cut off and gallons of blood get poured around. But the cheering didn't stop there. As soon as the audience got into the movie, and got over an initial impression of crappiness (like a very rudimentary set, bad editing with scenes that were often just a bit too long and actors that were, with the exception of Stephen Dorff, sub par), it became clear to them that the movie is intended as a comedy and delivered funny and unexpected scenes one after another. And the laughter continued throughout the whole movie.
I really enjoyed the movie a lot, and in retrospect did not notice that it was actually 100 minutes long (although cutting 10 minutes off would have helped).
For it's great entertainment value (and isn't that what movies are all about ? ) I give 7 points. I cannot give less to a movie that I enjoyed so much, even if it has a lot of shortcomings on the technical side.