Continuity mistake: In the beginning Laurie's bandage goes from bloody to white and back again repeatedly. It also gets wet, yet not even 15 seconds later it's completely dry and white.
Continuity mistake: Dr Loomis's pen changes from black to red at the book signing.
Continuity mistake: The Myers' house in this film is a different house than the house in part one.
Suggested correction: The house could have been remodeled.
It is implied that the house was unoccupied since the murder. So why would anyone want to remodel a Cape Cod style house that was in the first one into the huge house in this film? If you look at the interior, the house was definitely worse for wear, so it being remodeled is highly unlikely.
Continuity mistake: In the beginning Laurie is in the shack hiding from Michael Myers when Buddy comes in and sets down the donuts and coffee he had on the desk, he hands her the coffee and goes to get his car. When Michael is looking through the window, you can see the whole desk and the donuts are gone.
Continuity mistake: When Laurie is holding a pig, there are two people dressed in bright colors standing next to her. When she leaves those two people are gone.
