This movie is pure, concentrated evil.
I acquired my copy from the dusty back bins of a video store which was going out of business back in 1987. Just to put things in perspectrive, it was on Beta--I had to dub it over to VHS. As a gamer, I tend to collect movies in the "Roleplayer Goes Crazy" genre. Most of them are pretty bad...but this one has them all beat, in terms of sheer deep hurting.
Nevermind the blatant anachronisms--such as the opening scene, set in 14th century England in an 18th century manor house where a 16th century nobleman is killed by a guy in a cheesy 1980's wizard costume. Nevermind the fact that the lead actor looks for all the world like he's dead, and was animated by black magic just for this movie. Nevermind the fact that the best actor in the entire movie is a puppet who just hangs there and doesn't do anything. Even without all of those factors, the movie would just be painful.
And yet, it holds a kind of sick fascination, not unlike a car wreck---you want to look away, but you can't. This movie has spawned an unwholesome and degenerate cult (at least two of the other comments on this list are from members.) Beware--this movie is CONCENTRATED schlock of the worst kind. Do not, do not, do NOT watch this movie and Mazes and Monsters back to back. The last person who did that wound up in the hospital a few hours later with an acute gall bladder attack. I kid you not.