Revealing mistake: At the cocktail party in his honor, Rita Richards introduces herself. Joaquin Phoenix's scotch is in a transparent plastic cup, and you notice what happens in most movies, here with particular clarity; when he brings it to his mouth, he does not take even a sip, but just pretends. (00:06:05)
Continuity mistake: When the young boy loads his bow and arrow while talking to his older brother, he does this twice without firing it. (00:53:55)
Factual error: Tina's striptease dance is mentioned several times as a notable scene in the fictional 1986 movie 'Camp Bloodbath'. When that scene plays out, the song Tina dances to is Warrant's 'Cherry Pie', which wasn't released until 1990.
Factual error: In the end credits, when the listing of songs used in the film is rolling, the Kiss song is listed as "Detroit City Rock." Actually, the song title is "Detroit Rock City." (01:38:10)
Continuity mistake: When Killian is speaking with his father in the port after arriving, after his father says "Welcome to your birthplace, son", Killian readjusts the bag strap he has over his right shoulder with his left hand. In the next shot, his hand is suddenly off the strap and then goes to readjust it a second time. Then in the shot after that, his hand is off the strap completely. (00:13:17)
Continuity mistake: Ilya is standing across from and about midway between Chris and Alicia. He spears the shovel into the ground, but it unintentionally falls over to his right (mostly off-screen). The next view of the shovel shows it has fallen to Ilya's left. (The entire shovel is to the right of Chris, which would be too far regardless of which direction the shovel's handle fell.) In the next view, the shovel's blade is opposite Chris' left foot and later the angle is different. (00:36:30)
Continuity mistake: When the big truck chases the red car and repeatedly rams into it you can hear broken glass, etc. but in the next shots the back of the car is intact, red and shiny, without a scratch on it. (01:05:00 - 01:06:00)
Revealing mistake: In one of the opening scenes the platoon of the captain is gunned down by a MG42. You can see the crimped fronts of the blanks in the belt.