Violent Shit III: Infantry of Doom (1999)

3 men get stranded on an island. They are captured by this group of people who turn out to be members of a group under the direction of Karl Sr. and his son Karl Jr., who are the famous butcher/slashers from the first two Violent Shit movies. Soon these three men and a bunch of exiles are given a chance to run away from the group members; unlike some others who are brutally murdered. However they decide to fight back and a gory and violent battle ensues.