Continuity mistake: When the skinny-dipping girl reaches the ladder attached to the pier, you see her grab it with her left hand. When it cuts she holds on to it with her right hand. (00:03:25)
Continuity mistake: At the institution when they find the coma patients, Will picks up some papers from the patient's charts. The way Will holds the papers differs in the shot when Lori says "Who would do this to people?" (00:57:05)
Continuity mistake: In one scene a security guard gets squashed by a door. It then pans over the door, and you can see large grey marks in the door, from where it's been bashed in by Jason. The dents are quite different from when the camera pans over the door, to the wideshot. (00:56:25)
Continuity mistake: When Will and Lori are driving in the van you see a car's headlights behind them in a close up shot. However, in the previous wide angle shot, there was no car driving behind them. (00:46:25)
Continuity mistake: When Jason throws Freddy to the wall in the burning house, you can see a window on the wall. Now, the distance between the window and the corner of the wall is about five feet. This gives Freddy space enough to hit the wall and not hit the window. However when Jason picks Freddy up you can see the distance has increased to about one feet. It's like they've put in an extra window where there should be a wall instead. (01:14:30)
Continuity mistake: When Freeburg and Shack are handing out the flyer's for the party, we see Kia cross her arms as Gibb ask Lori if she wants to go. When it cuts Kia has her arms down. (00:26:05)
Continuity mistake: When Jason slams his machete in to the panel and gets electrocuted, the panel is pretty damaged. When it cuts to him grabbing onto Stubbs, it shows the panel again, much less damaged. (00:59:10)
Continuity mistake: When the girl goes skinny-dipping you see her leaving her purse and clothes on the pier. When it cuts they have suddenly disappeared. (00:03:00)
Continuity mistake: When the two guys are out in the corn field smoking weed the kid is looking at a glass and a jar while holding them up. In the next shot the glass and jar is lowered and he is looking at the other guy. (00:39:50)
Continuity mistake: When Lori says "Why don't you start in the kitchen and get us some beers" Kia sits next to her with her hand to her mouth eating popcorn. The hand keeps changing from being down and being by her mouth between the shots. (00:10:25)
Continuity mistake: Out at the party when Kia comes to Will and Lori and says, "Let's go shake our ass on the dance floor," you see Linderman standing a few feet away from Will. When it cuts Linderman is suddenly close to Will handing him a beer. (00:35:10)
Continuity mistake: After Freddy and Jason lands on the pier you see Freddy crawling facing forward. When it cuts Freddy is suddenly looking backwards at Jason. (01:20:15)
Continuity mistake: When the three girls are sitting outside the school, Gibb puts her cigarette to her lips twice.
Continuity mistake: In the end of the movie when Jason comes through the water stabbing Freddy with his own glove, you can see the spikes only coming out of Freddy's chest. When it cuts to Freddy falling to his knees, the whole fist and parts of his armwrist suddenly has gone through his chest. (01:24:00)
Continuity mistake: When the sheriff says, "Or so help me God I will lock you up," to Stubbs, you see the sheriff lift his hand with the cigar up. When it cuts his hand is down. (00:51:00)
Continuity mistake: The end of Jason's machete changes throughout the whole movie. Sometimes it has a rounded end, sometimes it has a pointed end and so on.
Continuity mistake: At the end, Jason tears off Freddy's arm but when they go flying into the lake you can see Freddy has both arms intact.
Continuity mistake: In the scene where the teen tranquilizes Jason and gets cut in half, we see the two parts of the body in the left side of the hallway. After a few scenes, when the camera gets a close-up of the bodyparts, we see one in the left side of the hallway and the other one in the right side. (01:03:43)
Continuity mistake: When Kia is flicking through a magazine, the page she's on changes from closeups to wideshots. You can tell by the pictures and text. (00:28:15)
Continuity mistake: Before Jason kills Trey, we see Trey getting a can of beer. Beside that beer there is another can, which change position in the next shot. (00:12:30)
Chosen answer: Jason survived due to his unique healing abilities, at the end of the original "Friday the 13th" he is shown coming out of the lake. He is deformed with some mental handicap.
MasterOfAll