Dirty, pesimistic and filled with dread and a complete lack of hope for a better future. In other words, the type of scifi only a country under communist rule can produce.
Fascinating atmospheric horror that feels so ahead of it's time. Ahead of most horror films made in America at the time, very much in the vein euro gothic horror. The closest i could think in terms of mood and framing will be Mario Bava. It's an effective slowburn horror tale that plays tricks with the audience, in a clever way. Never showing any contempt for the viewer. It's one of those few movies that truly feels that it fell from another dimension. Deserves a criterion BR pronto.