Revealing mistake: After the machine runs over the terminal, killing him, when the camera shows the legs being run over again, it's easy to tell that they're dummy legs.
Def-Con 4 (1985)
1 revealing mistake
Directed by: Tony Randel, Digby Cook, Paul Donovan
Starring: Maury Chaykin, Kate Lynch, Lenore Zann, Kevin King
Continuity mistake: In the cabin, the survivor and Howe hear an explosion, and the survivor goes out to investigate. He pulls up a board and unlocks the door, and only closes it after him. When the girl comes up from the basement, the door is closed, locked, and barricaded.