How bad is it? It's a lower rung biker film, with terrible plot (dis)continuity.
Should you see it? If you can handle extreme exploitation, yes.
Guy gets into fight with Nazi bikers (and this was filmed in Austria or Germany) and a biker dies, so the bikers beat him and rape his girlfriend. Then the guy gets friends from martial arts school to attack the bikers (a penis gets severed). The bikers than attack the martial arts school with machine guns and grenades, but the guy they want isn't there, so they then go on to kill his family. Then the guy hunts down the bikers. That's a lot of plot for 75 minutes - and there's a dance number! - but the film is so disjointed, poorly dubbed and full of inconsistencies, that it qualifies as a bad film.