While the original Friday the 13th was a barely-released low budget flick with a definitively conclusive ending, that can't stop the hollywood sequel machine from kicking into high gear in record time! Introducing Jason science fiction movie as the killer, this (blog post) particular entry in the series isn't actually seen as a high point despite paving the way for the iconic villain. Mainly because they way they did it was incredibly stupid, even for (blog post) horror movie standards.
Source: Friday the 13th Part 2 Movie Review - Decker Shado