Here is the full list of all 9 They Came From The Moon achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Play The Game For 1 Minute
Play The Game For 5 Minutes
Play The Game For 10 Minutes
Play The Game For 20 Minutes
Play The Game For 30 Minutes
Play The Game For 45 Minutes
Play The Game For 60 Minutes
Play The Game For 90 Minutes
Play The Game For 120 Minutes