When Wolfram brings Haeckel to the cabin for the first time, it's clear that there are no other cabins next to it. However, when Haeckel walks to the cabin in the morning after waking up in the graveyard, there is now a big rustic cabin next to Wolfram and Elisa's cabin in the background.
The supposedly dead body that Chester brought to Ernst clearly shows breathing chest movements.
This is supposed to be taking place in Massachusetts but the characters have British accents.