Iceman Cometh (1990)

A warrior from the underworld and his assistant enter the human realm to try and destroy the fox spirit that has been terrorizing their tribe. After the warrior gets injured and loses his sword the kindly village doctor and his daughter take him in. Then bad things start happening to the village - livestock killed, babies snatched, people murdered. The villagers are suspicious of the stranger. He needs to find his sword and kill the fox to rid two worlds of its evil.