The Main Character Florian Sekyra cuts himself (by his own will) with a Scalpell, in front of the rolling Camera in his Forehead and his Arm. The rest of the cuts on the Arm were done with make up. It spells Helter Skelter.
In one Scene, the Main Character has to vomit. For this Effect, he had to spit some stuff out of his Mouth. In a break, the Director leaves the Set. When he returned, he faces the real vomit of the Actor on the Floor.
The Actor was disappointed, that the Camera was not rolling during his real vomiting.
The Movie should be in black and white.
But the Lab couldn't clear all the colors out and the effect of these washed out colors worked as well.