I would have given it a lower rating, but there is one song in this, that is just too damn funny ... well I'm a sucker for certain things I guess. Overall you should know what you are getting with a movie like this. Even a well know German actor is in it, for a little bit, to make some money. You can't blame him for that. Nor the movie to have someone to promote this low budget trash with.
There is also a former porn actress in it, though there are not explicit sexual situations (there is nudity and a lot of blood of course). The jokes and the acting go hand to hand ... all the way down. Not good then, but maybe that is what you are looking for
