Here is the full list of all 8 FXNOW achievements worth 0 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
Watched first movie with FXNow!
Watched an original show!
Launched FXNOW!
Watch 1 original drama and 1 original comedy to unlock this achievement.
Watch 3 extras.
Watch any episode from a previous season to unlock this achievement.
Watch 3 movies from Action, Comedy or Drama to unlock this achievement.
Watch 10 original episodes.