Jade Dagger Ninja (1982)
A marriage between nobles in Ancient China sets the stage for murder, monsters, and mutilation as the invited guests search for a secret hidden treasure. A search that leads them through dark evil forests, opulent palaces, and each other! When two sick and twisted killers enter the fray it is up to our hat wearing hero to straighten things out and put the warlords, henchmen, and evil ninja six feet under! But is he working for the law, or himself?