“Friday the 13th Part 2” (1981) has the distinction of being the first slasher sequel. (“Halloween II” would be released later the same year.) As such, you’d think it would be a pioneer of the Sequel Rules, as famously articulated in “Scream 2” (1998), i.e. a higher body count and more elaborate, gory kills. In this respect, “Part 2” is a disappointment. The body count is roughly the same, and it didn’t seem to occur to the filmmakers to get more creative with the ways the killer disposes of the horny teens. That said, “Friday the 13th Part 2” is an improvement on the original.
It should be said that this film is basically a remake of “Friday the 13th.” The setting and story are the same and the characters even look strangely similar to the original cast. But, like any smart sequel, it uses the events of the first film to fortify its own story. In the original, the backstory of Jason and his mother was spilled out suddenly at the end, but here, those details are used throughout the film to humanize the killer, if such a thing can be said about Jason Voorhees.
The major upgrade that was done for the sequel was ditching the mystery angle. The original film used a first-person camera to conceal the identity of the killer until the end, when the killer was revealed to be an elderly woman. The fun of a mystery plot can be totally undone by an unsatisfying conclusion, and while this was a funny twist, and Betsy Palmer’s performance as Mrs. Voorhees was appropriately creepy, she was not at all threatening. The reveal made you reconsider the story and wonder why any of the victims were not able to run away from her or overpower her, forcing you to conclude, “Oh well. It’s just a dumb slasher movie.”
In the sequel, there are a few first-person shots, maybe used as a callback to the original, but it’s made fairly clear that the killer is Jason, the son of Mrs. Voorhees. This allows us to explore the character a little, as when the sheriff discovers his crazy ramshackle shed in the middle of the woods. You can’t help but imagine Jason building it. One character mentions that he hunts woodland animals to survive. Another expresses sympathy for Jason and his mother, both trying in their own deranged ways to cope with the loss of the other.
So, little by little, a picture emerges of Jason as a human; a dangerous and demented one, to be sure, but one who needs food and shelter and the love of his mother nonetheless. It may also be significant that at this point in the franchise, Jason has still not donned his signature hockey mask. He’s not yet Jason the Horror Movie Monster. He’s a guy who lives in the woods. All of this gives the sequel a bit more depth – just enough to make this stupid slasher movie feel more substantive and satisfying than the original.