Diana's film of Giancarlo is an exact replay of the movie's scenes. This film, supposedly shot from an air-conditioning vent, includes a shot from the other side of the room of her and her cameraman being discovered.
After Jackie slides down an escalator rail in a chase at the mall, the seat of his pants bears a clearly visible black scorch mark, which disappears in the next shot.
When Jackie is driving the mining dump truck, the first set of cars he drives over are just flattened, but the second set of cars explode.
In the mall cooking scene, Jackie tosses a small piece of egg to Miki but the egg that hits her face is much bigger.
In the mall cooking scene, Jackie "dices" the rolled egg very sloppily and the egg is in scraps. The next shot of Jackie throwing the egg to Miki, for a split second you can see the rolled egg chopped perfectly.
Giancarlo roars at one of the cops that if they invade his property, he can "Shoot you like a dog". Another of the cops nods his head and says "He's right". The movie was shot and set in Melbourne. Gun ownership in Australia is strictly regulated, and no-one has a legal right to shoot anyone, let alone a policeman.
The film states that this is Jackie Chan's first film shot entirely in English. The Big Brawl (1980) was Jackie's first movie to be shot in English.
In the scene where Jackie leaps from the park and onto the fixed crane, swinging above where the Demons stage the kidnapping, it clearly visible that Jackie misses his mark when grabbing for the crane extension. His hands breeze right by it. But, in a following shot, you see him successfully grab the crane extension and swing down.
Giancarlo's mansion is shown to be completely made out of plywood when Jackie demolishes it.
Around 01:01:27, we can see the videotape on TV. This videotape was recorded by Diana with only one camera (in a scene at the beginning). But at the TV, we can see multiple shots which are in fact the shots of the movie itself.
In the scene where Giancarlo offers half a million dollars to the Demons in exchange for the return of his cocaine, later on when the gunfight breaks out and the briefcase is knocked open, and also later when Giancarlo is carrying the money out in his arms after the gunfight, we can see that it was only filled with $1 bills.
In the first shot of Giancarlo's house, there is Tina swimming in the pool. This same shot was reused right before a scene where Giancarlo gets a phone call from a Demon gang member. Tina was killed right after that first scene in the pool.
When Lakisha and Miki are calling Jackie when he is hanging onto the wheelbarrow dumper, they both say his name twice together. The second time, they are clearly not shown saying it.
Near the beginning of the film when Tina is taken to the "guest house", there is a tire screeching sound as two cars drive away, but they are driving on dirt.
At Giancarlo's mansion, the police are wearing the uniform of the Victoria Police and driving cars with New South Wales number plates.
At the mall scene when Jackie is tossing food to the people, the fifth person he tossed to is a blond woman but before the piece of food gets to her mouth one of Giancarlo's man pulls up in front of her and catches the food with his mouth, at that moment you can see that the blond woman got behind him running out of character by moving her head, meaning that she pulled her head to the side too early for Giancarlo's man to enter the scene.