Revealing mistake: After the shootout in the hotel, the police photograph the bodies of the dead cleanheads. The flash of the camera causes the "dead" men's eyes to blink slightly.
Continuity mistake: In the scene where Ridzik, Stobbs and Gallagher are performing a drug raid, Stobbs and Gallagher begin to arrest two gang members by handcuffing them to a pole/pipework within the apartment room. Ridzik then proceeds to kick-in a wooden door, when another gang member shoots with his shotgun, resulting in a great big hole in the door. With the gang member's second fire of his shotgun, (quickly after the first) he shoots the same hole out of the same door. (00:18:00)
Continuity mistake: During the scene where the cleanheads go to rescue Viktor while he is handcuffed to Danko, Ridzik runs back and has a shootout with them. During this he ends up shooting the one fake officer to the ground and thus knocking his hat off. Then just a few seconds later we see Viktor and his men running out of the building and the officer who lost his hat now has it back on his head. Then a few seconds later it cuts to a shot of the officer and the hat is off of his head again, on the ground to the right of his body.