Another thing to consider is the hilarious dialouge, some of it utilizing "Blazing Saddles"-style rasict humor. "We live in a white man's world" was the most common, and I thought it was funny (and yes I'm white by the way). The film does have excellent kung fu action, though I find it a bit odd that they would speed up the camera process to the point where these fighters looked like they shot up too much heroine and then engaged in combat.

Best (exploitation) ninja movie ever and highly recommended unless you hate bad films in general.