I saw this soon after a print was discovered in an Italian film vault. No one had subtitled it as of yet. The theater, Film Forum, here in New York City, hired an Italian translator to keep the audience up on the dialog and story.
It's remarkable how many films from the past 20 years were prefigured by this film. In a way, the "Day After Tomorrow" could be considered a remake. The destruction of New York is quite harrowing, actually more harrowing then the stupid "Day After Tomorrow". The special effect people orchestrated numerous shots that show masses of people perishing in the collapse of the city. And it's not in that distanced way that removes the human element from the horror. Actors are integrated into the effect work in creative ways. A recent example would be the monster films of Shusuke Kaneko. After the city has completely crumbled, the ground breaks open and the wreckage falls into a crevice. Then a tsunami inundates the remaining ruins! Yikes!
The rest of the film is done in a typical early 30's melodramatic style. Judging from the other comments here, the translator sort of soft-pedaled the racy parts. The film didn't hold up very well here but I think this could very well be the first post-apocalyptic film ever made.