Factual errors: When Kristen puts a record on, she places the needle at the beginning and we hear "The Sprout And The Bean" by Joanna Newsom. Yet no vinyl album has ever been released where this song is at the beginning of either side.
Continuity: Kristen puts on a vinyl LP. During the first song, there's a knock at the door. She goes to investigate, but when she comes back, the record is no longer playing, even though it was only halfway through the first song on the side.
Continuity: When Kristen is hiding in the closet she is looking upwards towards the masked villain. However the slats in the door are facing downwards and there's no way she would be able to see him.