Other mistake: Watch the scene where the drunk Ben Tramer (wearing a similar Michael Myers mask) was hit by the speeding cop car and then pinned against the parked van before burning. Even taking out the equation of accidentally hitting Ben Tramer, what was the cop car doing speeding at that rate of speed, head on towards a parked van on a side street? Remember, we only hear screeching brakes after the car hits Tramer, and we never see the cop car swerve or any of that to miss hitting the van. Seems that even if Tramer hadn't been there, the cop car was sure to barge head on right into that van.
Other mistake: Toward the end of the film, Cora and Frank put the top up on their roadster, then drive off without latching the top.
Other mistake: When Snake is injected, and his timer is set to 23:00, Hauk tells him the glider is waiting. The next scene has Snake getting into the glider, but when he radios in, Hauk says there's 21 hours left. Snake was pretty upset that he didn't get a full 24 hours; knowing his life is on the line, why would he take 2 full hours to walk out the door and over to the glider that was waiting for him? (00:24:00 - 00:24:55)
Other mistake: When Ned Racine goes to see Teddy Lewis about making a bomb, Teddy turns down the music by adjusting a unit (possibly a radio) on his workbench. Near the end of the scene, Teddy climbs up on his loft bed and, after saying his last line, reaches out of frame and turns down the radio. There's no way he could have reached the workbench from that distance. Most likely the editor used Teddy's gesture to motivate his turning down the music. And it works.