Also known as Quest for the Mighty Sword, Ator IV: The Hobgoblin or Troll III.
This one is pretty bad. Ator was not even in the movie from what I can remember and the movie focuses on Ator's son instead. From a movie directed Joe D'Amato that the movie can be fun but it's not sadly. You just a get a boring action film with lame and poor written characters.