You can watch the first few minutes here: [this video has been removed.]
Moria calls it "one of Godard’s most eccentric indulgences". FilmReference.com has a page which says the film "remains part of a valuable current of science fiction while holding its place in the history of cinema". DVDTalk reviews the Criterion edition, rating it "excellent". Films de France opens its review with this:
If there had to be just one word to sum up Alphaville¸that word would have to be weird. It is a film that constantly challenges our preconceptions, our expectations, and, as a result, manages to be both deeply disturbing and very funny at the same time.