Continuity: Myers at the end rips Rachel's shirt on the sleeve when she is driving the truck, right after he rips it, it is together again, he rips it again, then it is together again!

Continuity: Right after Michael kills Brady, Jamie and Rachel run up some stairs to the attic. At this point the stairway is empty, Jamie and Rachel therefore throw stuff down the stairs to make it harder for Michael to come after them. But when the shot changes to Michael coming up the stairs there are now more things on them, then what Jamie and Rachel threw. Look for the chair.