Continuity mistake: John is taken down by a trap set by Hansel and puts a big hole in his back. He gets back up and is shot down by the Sheriff. As he is getting up a second time, it shows his back. There is no hole in his back or shirt before the Sheriff finishes him off. It also shows no hole or blood on his back in one shot when he is chasing with the bear trap before he is shot the first time. (01:16:45)
Revealing mistake: At the dinner table when Lilith and Gretel are eating lunch with Lilith's "sons", Gretel takes a knife and stabs the boy closes to her in the hand. In the close up of the hand, it looks obviously rubber. That and there is already blood under it before the knife even hits. (00:37:25)
Continuity mistake: When Hansel and Gretel are hiding from John, a jar of worms has been broken on the table they are under. Some worms fall through and land on Gretel's face, leaving dirt. The shot cuts to John, then right back to Gretel and suddenly her face has no dirt. Throughout that entire sequence, dirt and worms keep appearing and disappearing from her face and neck. (00:48:30)
Continuity mistake: Hansel falls asleep in Lilith's house after his leg is injured, and Lilith and Gretel move him to the couch. In the close up, his head is facing up to his left. The shot cuts and suddenly his head has slumped over looking down to his right. (00:15:20)
Visible crew/equipment: As Hansel and Gretel are getting into Lilith's Volkswagen, the camera is panning around the vehicle. As it does, you can see the legs of a crew member walking around behind it by the tree. (01:12:35)