Though little-known, this early 80's flick has the sensibilities of a 70's movie, from first-person narration to a somewhat dry, rather serious in tone, story. That said, I had a lot of fun with this, though the kills were rather weak. Still, I got a really blast out of the ending, and I'd say this warrants a rewatch sometime down the line.
Have you happened upon this flick?
(http://fight-evil.com/movies/years/1981/338-1.jpg)