If you loved KISS - Attack of the Phantoms, try Die lebenden Leichen des Dr. Mabuse
Eine Brücke zwischen einem Film, den du schon gesehen hast, und einem, den kaum jemand kennt. Das teilen sie, und was der zweite macht, was der erste nicht macht.

KISS - Attack of the Phantoms

Die lebenden Leichen des Dr. Mabuse
Was sie teilen
Both films are directed by Gordon Hessler, and they sit in Horror / Science Fiction territory. If that's the register that drew you to KISS - Attack of the Phantoms, the second film will land in a comparable space — through a different lens.
What Die lebenden Leichen des Dr. Mabuse is
Seaside flats, midnight rain drumming gutters. A man’s silhouette melts into shadow; only the scrape of his blade against concrete breaks the hush. Inside a doll-littered mansion, a white-coated figure decants crimson into graduated cylinders while a heartbeat monitor blips erratically. Hessler tightens the screws on 70s Euro-horror before the genre’s first self-aware kill.