Continuity: In the very first scene where Old Tony is debriefing Leon, we see Leon pick up his glass of milk and drink the entire glass. However, if you look at the reflection of Leon's glasses as he takes the glass away from his mouth, you can see that the milk is not finished.

Continuity: After Leon rescues Mathilda from the SWAT team and dodges the snipers, he shoots out a ventilation fan to make an escape route. The blast pattern in this sequence is all wrong. First off, the camera starts on Leon as he begins shooting. He gets off two shots before the camera switches to the vent, but when it does we see about 7 bullet holes around the vent. Then the camera goes back to Leon as he continues firing shots. When the camera is on the vent again, some of the holes that had been there previously are gone. Most notably a hole directly above the vent and to the right is no longer there, and the damage below the grate is significantly less than it had been.