Here is the full list of all 15 My Shameless StepMom achievements.
Let Lucy play with you.
Distract yourself with Ailyn by the lake.
Have fun with Lucy at the police station.
Fulfil your father's duties with Jeannette.
Help Odri relax.
Let Jeannette distract you a little.
Enjoy Odri in your stepmother's room.
Attack Kevin for the second time.
Lie more than 3 times.
Complete all the observations correctly.
Have a romance with three heroines in one playthrough.
Piss off the detective.
What did you leave in the rubbish bin?
Go through both routs to find out all the details of the story.
Find a letter from your father.