News Error
When Edna is watching the news, the newscaster says, "Bodies were found literally strewn over the four square mile campground". However, Jason brought most of the bodies to his cabin in the woods (in Part 2).
Watch or No Watch?
When Shelly throws the wallet to Vera in the store he is wearing a watch, but that is the only shot in which he has a watch on.
Pink or Beige?
When Shelly and Vera are walking out of the store, Vera stuffs Shelly's wallet into her beige pants. Later while sitting on the dock, she pulls them out of her pink pants.
Oops! Switched Pitchfork
Jason approaches Loco with a pitchfork with five prongs, but the pitchfork that enters Loco's stomach has only four prongs.