Revealing mistake: Obvious rubber material when Lori tears off Freddy's ear. (00:56:40)
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.
Revealing mistake: When Lori decapitates Freddy at the end, it's obvious Freddy is a dummy (slow motion can help but isn't essential). (01:24:35)
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)
Revealing mistake: When Jason kills the kid by throwing his flaming machete through his body, it is obvious that the guy has a mouth full of fake blood in the slow motion shot, right before Jason impales him with the torch. (00:41:15)
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)
Continuity mistake: When Mark says "The parents burned him alive" you see Lori lifting her hand to her head. When it cuts her hand is gone. (00:27:05)
Continuity mistake: In the scene where Linderman and the deputy is watching Freeburg throwing all the Hypnocil pills down the drain, they are looking through a glass. Then you see Jason coming up from behind lifting his left arm with the machete reflected in the window. When it cuts he lifts his arm again but this time it is his right arm. (00:59:05)
Continuity mistake: In the opening sequence, when Heather (Skinny-Dipping Girl) runs down the pier, the first overhead lamp sways violently back and forth. However, in the next shot a second later the lamp is dead still. (00:03:00)
Continuity mistake: When Will says "Let's tie the bitch up" you see Kia lifting her hand up. When it cuts her hand is down. (00:53:55)
Revealing mistake: When Jason sends Kia's body flying into the tree during the fight scene at Crystal Lake, you can see the dummy's arm go flying off of the dummy, in the upward direction, in the shot after the body makes contact with the tree.
Revealing mistake: Notice when Jason is stabbing Trey. Jason isn't even close to Trey at all. He's just stabbing the mattress.
Continuity mistake: Linderman accidentally shoots a Glock 17 in the van, grazing Will's right ear who grabs it, but during the remainder of the film there isn't a graze on his ear at all.
Revealing mistake: When Jason is whacking the party goers, you can see the padding Jason slices under their shirts.
Other mistake: Towards the end after the kids wreck the van, Kia points to a sign for Crystal Lake. That's where they are supposed to go but they go the other direction, away from Crystal Lake.
Suggested correction: They were still heading for the camp, which is where the fight takes place.
Revealing mistake: When Jason cuts off Freddy's arm you can see the actor has his arm tucked behind him under his sweater.
Other mistake: When Will and Lori get out of the Lake at the end, Lori's arm isn't burned. It's only scratched.
Revealing mistake: When Freddy drops the large boiler on top of Jason during their fight in the warehouse, the boiler is made of cardboard or some other lightweight material because it doesn't land very hard and it even bounces a bit.
Suggested correction: It is also a dream which means anything can happen.
Freddy was trying to kill Jason. Why would he drop something on top of Jason that was too light to crush him?
Revealing mistake: When Jason swings his machete at Blake on the porch, as he swings you can see the actor stop swinging so it doesn't even make contact with Blake at all.
