Continuity mistake: When Kay-Em is shown firing at Jason with the two pistols her arms are straight out in front of her, but in the shot from below her elbows are bent and she's firing from waist height. In the next shot, her arms have returned to being straight out. (01:03:45)
Continuity mistake: As Kay-Em repeatedly kicks Jason, between shots the amount of blood on his machete varies. (01:04:00)
Continuity mistake: After Kay-Em blasts Jason's leg off, in following shots the position of the leg differs. (01:05:00)
Revealing mistake: After Jason gets his arm blown off, you can see that his torso is much bigger than before since the actor had to hide his arm somewhere. (01:05:10)
Continuity mistake: When the android kills Jason she throws the machete into him. Later when the healing ants are trying to rebuild Jason and start searching for synthetic cellular replacement, in the wide shot you can see the machete no longer sticks out of his body. (01:05:25 - 01:10:05)
Revealing mistake: When Uber-Jason punches off Kay-Em's head, you can see that it is already rolling off her shoulders before he hits her. (01:11:10)
Factual error: When Jason is outside the ship and punches the hole to get back inside, the crew rush to the door and close it because the lack of pressure is causing them to be sucked out of the ship. They go through several rooms and close multiple doors. Yet when Jason rips through the final door, there's no sudden rush of air, no loss of cabin pressure, even though there would be a continuous path to the broken outer wall of the ship. (01:13:00 - 01:17:45)
Plot hole: When the Grundel explodes near the end, Rowan looks out the window to see Uber Jason floating towards the rescue shuttle, only to be grabbed by Brodski who happens to fly sideways at a high rate of speed. Now provided it's feasible that Uber Jason can survive an immense explosion, how Brodski not only survived the explosion but managed to wind up away from the spaceship and far enough off to the right so as to catch Jason in mid-space is beyond me. (01:22:15)
Plot hole: When Professor Lowe calls Dieter Perez to tell him about his findings on Earth 1, Perez makes note that one of the viables was named Voorhees and deduced it was Jason Voorhees. How did Lowe know it was named Voorhees? 1) Rowan at the beginning acknowledged she had yet to prep the chamber which means no paperwork. 2) The students found no paperwork when they found the chamber and had no time to look for paperwork once they realized they needed to get Rowan to a lab to save her right away. 3) Rowan did not give him Jason's name when she first woke up. This is obvious in the scene after Lowe talked with Perez he was talking to Rowan and she brought up the story about Jason and he acted like he never heard the name before. So there is no way for Lowe to know Jason's name for his report to Dieter.
Continuity mistake: At the beginning they show a close up of Jason, the skin around his eyes and ears (around the outside of the mask), are flesh colored and looks like normal healthy skin. When Adrianne takes his mask off during the autopsy they skin is grayish like it's decaying.
Continuity mistake: When Rowan is stabbed by Jason she slides down to the floor and freezes sitting up. She remained undiscovered and undisturbed for over 400 years until the scientists find them. So how did she end up lying on her back covered up by what look like exhaust tubes? Aside from the unlikelihood of no-one stumbling across her for all that time.
Other mistake: As Jason wrestles around with the kid on his back his left eye opens some and his real eye can be seen. However, the eye was removed during the examination at the beginning.
Continuity mistake: In the fight scene between Jason and Kay-Em, she's blasting away at him with the auto-guns. When Jason falls, you see that his machete is almost bloodless, but a second later, it's bloodied up again.
Plot hole: In the beginning of the movie, Lexa Doig's character and Jason are frozen in cryogenic stasis. Considering how important Jason is to scientists, why did no one arrive to check out why no one or nothing was occurring in the research facility until centuries later?
Suggested correction: The Jason Project was considered Top Secret. In fact it was so secret that if anything went wrong the whole project would be abandoned and sealed.
Mortug
Correction doesn't make sense; I don't care how Top Secret something is, that young lady most likely had family that would have most assuredly questioned her whereabouts and there's no way Jason would have been left unattended in that chamber.