Youtube has it online in segments. Embedding is disabled but the film's 12 parts are linked here, and they should autoplay from the first video here. [That playlist has been removed.]
Moria says it "has deservedly become a classic of the genre" and that it "is exceptional, a model that has never been surpassed by any of its imitators or remakes." 1000 Misspent Hours says, "This is the way a suspense movie is supposed to be." FilmReference.com calls it "exhilarating at first viewing".