Here is the full list of all 13 3001: A MILF Odyssey - there are NSFW Sci-Fi achievements.
Right in the face.
Modify Wendy.
Win your fight against Sasha.
Make your case in front of the Khan.
Encounter the Pink Entity.
Seduce Tittyana.
Complete the Bonding ceremony.
Thwart the Ambassador's plan.
Help Hadikay with her research.
Save Lizzy.
Get acquainted with the Android.
Kill the parasite infecting Doctor Smusher.
Introduce yourself to the crew.