Other mistake: After the two doctors and the sheriff pull up in the parking lot and then enter the hospital, Michael suddenly appears to Laurie, and she runs from him across the lot toward the same entrance, and suddenly the doors are locked. There is no way this would be, as the doctors and the sheriff would have had to stop and unlock the entrance before entering themselves, which they did not do.
Suggested correction: The door was already open and then they closed it behind them.
Other mistake: Myers gets shot 6 times in the chest and body but has no blood or bullet holes.
Other mistake: At the hospital Laurie could not know that Myers was after her in there.
Continuity mistake: At the beginning of the movie, the front door lights on the Doyle house are on, then off, then on again in just a few different shots.
