There's not much else left to say. Cinematography is decent, some of the actors deliver a pretty good performance (Angeline Häntsch, Bruno Alexander, Gerhard Liebmann, Bernd Hölscher) - the main character's, however, is not really convincing at times.
Other than that, it's completely overproduced, drifting away from reality since minute 1. A rather cringeworthy take on David Bowie, massive overuse of soundtracks, it just feels like a never ending music video, picking up overly idealized stories of the character's lives. The "Sound" Disco looks more like a high-priced elite club of the 21st century in the US.
It's like they tried to take the whole Stranger Things fictional 80's retro vibe filter featuring fantasy content and apply it to a surprisingly uncritical story about drug addiction of Berlin's troubled youth in the 70's experiencing a mild existential crisis.
They lost me for good when they actually muted Bowie's song Heroes, the masterpiece that was carrying the atmosphere throughout the 1981 film "Christiane F.", after a few seconds just to fade in some somber piano cover of Sia's Chandelier. Not a bad song, but completely misplaced!
And that's one of the problems I have with this adaptation. It's a total overkill of dramatic elements, fake snow, wind machines, close-up shots and fake tears.
It's similar to what happens to a good photo when you start tweaking and using Instagram filters...