Nachtmahr is an intense coming-of-age story with a weird creature and a "hardcore" music. The film has an interesting atmosphere juxtaposing ordinary life with an eerie psycho moments. The party scenes accompanied by raw electro-music are mesmerizing, but they also feel a bit formulaic. The story tackles a multitude of themes (death, drugs, mental health, relationships with peers and with family, ...) but it feels disjointed, lacks coherence, and the open ending ultimately left me with more questions than answers. The acting performances are also quite weak. Despite its shortcomings, Nachtmahr is an enjoyable film mainly thanks to its bizarre vibe. Too bad that the plot is so... unfinished.