In the opening bus scene, while Freddy is drawing Ana, the camera cuts away to another angle where we see Freddy wearing a tie for a few seconds before going back to an open shirt Freddy again.
While the carnival is supposed to be happening in the USA in August 1992 you can clearly see the actor's breath as it was filmed in cold weather.
When the car pulls up to the smoky wall and Freddy and Ana are looking up at it, you can see the reflection of sky on the windshield, not the smoky wall.
When Freddy and Ana first go to the police station, Freddy finds a pistol in a drawer that is clearly marked airstrike 240. This is an airsoft pistol.
When the 2 survivors check out the radio equipment in the police station, the word receiver is misspelled on the equipment-it shows the misspelling "reciever" .
When Freddy comes back into the diner after the first flashback ends, you can see someone across the the street running from left to right.
The character of Ana played by Karolina Wydra is supposed to be an American, but the actress's native Polish accent is obvious throughout the film.
At the police station, Freddy just breaks the door glass without checking to see if the door's locked.