How bad is it? It's a Mexican punk biker movie - three kinds of bad.
Should you see it? Yes, if you enjoy exploitation films, it's a sure bet.
This is really just a biker film, where the gang parties, terrorizes the locals and gets stopped in the end by the cops. On the other hand, it's so outlandishly staged as to be quite entertaining. There's a scene where nuns reveal themselves to be in disguise - underneath are enormous perms, fake boobs and garish clothes and make-up. The film bogs down whenever the cops are on the screen, but there's just so much weirdness due to being what passed for punk in Mexico at the time. Th most amazing thing about this film is that it looks like a "Road Warrior" clone, but was actually filmed before it - though not released until 1988. There was even a sequel, which I haven't tracked down.