Really, really bad.

The first scene is taken out of Manos. A couple who are dressed like they're going to a formal dinner are driving in the middle of nowhere. Wander into a strange farm.

A central theme in this seems to be slapping women around.

The "monster" looks like an extremely cheap knock-off of The Creature from the Black Lagoon.

The 25 minute long flashback scene near the end of the film is completely pointless. It's also lacking any dialog, and is only told using music and some voice over narration. I almost took a nap during this scene.

This film has made my list of the bottom 25 I've ever seen. Not as bad as The Creeping Terror, but almost.