The movie was shot in chronological order.
In Spain didn't have a theatrical release (technical) until 2016, 9 years later. The film was only released in Barcelona (Phenomena) for 2 days in subtitled version and 35 mm. copy. In 2012, also was a premiere/event in Madrid (Artistic Metropol) for 3 days in subtitled version. The official release (limited) came in February 2020.
Due to the film's extreme violent content, the movie is completely banned in Germany. Even the cut SPIO/JK rated DVD was confiscated because of "glorification of violence".