Not good, at all
I can't find this film good in any way.
First, the special effects: the monster at the begining made the film look like a 50's movie, altought its already 1989. The script is terrible, cheap; the script is altogether the same scene repeated four or five times.
The film is not cheap enough to be considered B-movie, or cult classic; and it's definetly not good enough to be a great slasher kinda movie (by the time there were excellent horror films like Nightmare on Elm St)
I doubt the movie was released on cinema, and if it was, it was for a single presentation.
A waste of time.