Revealing mistake: Just as Jacob enters Bella's room through the window, a stunt prop - white band on his right wrist - is briefly visible.
Suggested correction: There is nothing on his hand if you watch frame by frame.
Revealing mistake: After Martin cuts his arm off, there are several scenes where you can see the bulge of the actor's real arm under his jacket. This is most noticeable when he is running through the birch wood, and when rooting through the ruins of the burned cabin.
Revealing mistake: While Cath is trapped on the other side of the fallen boulders, Dan tries to move some of the rocks to get her out. You can see one of the rocks by his feet move as if it is made out of foam. (00:34:25)
Revealing mistake: In the hospital scene when the nurse is filling the tub for the patient in the room above the cowboy's, he leaves the water on. When the water starts to come out of the tub it is coming out many times faster than it is going in.
Revealing mistake: It's an obvious rubber dummy when Chavez cuts off Juarez's leg. (00:43:30 - 00:44:05)
Revealing mistake: Axel's badge says deputy sheriff. He is THE sheriff. Not a deputy.
Revealing mistake: When William is running at the end, there is already a blood trail on the floor. Clearly from another take. (01:15:10)
Revealing mistake: During the ophthalmologist scene, when they zoom into the view of Casey's eye you can see the ring of the contact lens used to create the pigment change special effect.
Revealing mistake: When Christine is looking at the obituaries in the café, one of them is for Fredericka S. Freund. However, once you get past the first paragraph the obituary seems to be for Dr. Mary Allen Engle (nee English). Also, they forgot to put "Dr." before Freund's name. It may not be a coincidence that the Property Master for the movie is named Ellen Freund. (01:25:00)
Revealing mistake: When Dr. Heiter takes Katsuro from his car, you see Heiter drag him out of the back seat. He then proceeds to lift Katsuro. If you watch Katsuro's hand, you'll see he "helps" Heiter by pushing himself on the door-frame of the car (you see his hand tense as he pushes himself up).
Revealing mistake: During crash scenes towards the end the local traffic in the background is driving on the left hand side of the road (filmed at Darling Point, Wynnum, Australia) even though the movie is set in the USA.
Revealing mistake: During the opening scenes, just before the "double tap rule" a car hits a zombie in a security guard uniform. The windshield breaks a split second before the zombie hits it.
Suggested correction: The glass breaks at absolutely the right moment just when the zombie hits it.
Revealing mistake: The guy who takes the trash out of the club and bumps into Michael Myers, gets his head stamped on and squished, later appears in the film as the person introducing the Halloween party.
Revealing mistake: In the evil woman's dramatic scene after she kills the children, her knife flops around like it is made of rubber, but sounds solid when she throws it in the sink. (01:22:35)
Revealing mistake: After the 4 have been tied up and babyface has killed their captors, he grabs Alexa by the neck. There is a shot of him from behind and you can see the make up covering the back of his head/neck coming up above his collar.
Revealing mistake: When the girl is giving the guy a blow job in the school restroom, he finishes in her mouth. She goes to the sink and spits it out. You can obviously tell she had a mouthful of water going by the color and quantity. (00:20:45)
Revealing mistake: When Steven Seagal makes his triumphant entrance in the credits, his sword misses the first zombie he supposedly hacks (right after "Written by"), by a mile. (00:03:20)
Revealing mistake: When Needy uses her key to unlock the door, you can see the door is already open. (00:58:07)