Continuity mistake: The bank employee walks the customer out and opens the door for them. When he turns to go back into the bank he has to pass through a door he didn't open before with the customer he just walked out. (00:02:30)
Continuity mistake: A man in a mask is shown against a dark background in the rain. Before and after he shoots the bank employee, the background is much lighter. Also, he must be outside, but he is not shown from the bank employee's perspective (i.e. with a rained spotted pane of glass between them). And when the employee is shot there is no indication that the intervening pane of glass is shattered nor shattered pieces rained on the bank manager when the shotgun is fired through the door. (00:03:00)
Continuity mistake: In a second view at a different angle of the bank employee being shot, one of the doors that was shattered in the original shot is not shattered in the second shot. (00:03:02)
Continuity mistake: As the four bank robbers enter the bank, the shot employee is displaced to the left when he was driven straight backward and should have been in the middle. (00:03:04)
Continuity mistake: The bank employee is dragged back towards the doors (seems to have been propelled a long ways backward). but he shows no sign of bleeding from either arm, one of which had been stabbed. (00:03:44)