The town is initially a rather dark and, even, scary place. The residents are in the middle of a fight between two clans. The fights are cartoonish and no actual violence can be seen.
Sight of knives, spears and other weapons. An implied dead body is seen being carried twice.
Klaus initially seems threatening. The protagonist fears for his life (eg. worrying about being sliced into little pieces and thinking he is holding a severed head).
Some scenes that are quite dark in nature but have a comedic overtone and will probably go over children's head, for example 2 people are seen carrying a bag in the shape of a body and a shoe falls out of it, suggesting that someone is inside the bag (this happens twice)
There are several scenes where the protagonist is shown being chased by aggressive dogs. It's comedic, but can be upsetting for cynophobic viewers.