Here is the full list of all 29 Fashioning Little Miss Lonesome achievements.
Get every ending.
Bring Saito back from the brink.
Play Saito's bonus scenes.
Play Miki's bonus scenes.
Make your ship canon.
Announce your love to the world.
Avoid commitment with all your might.
Start the 3P route.
Entrust Saito with your entire life.
Have Daddy pull some strings.
Force Saito to take desperate measures.
Hell is other women.
Choose Miki over modeling.
Gamedev is hard, kids.
Send 'em running for the hills.
HAHAHAHAHAHAHAHAHAHA!
Stake your claim in front of everyone.
Make a new... friend...
Get a little too comfortable with comfort food.
Down, boys!
Get Miki's hopes up.
Make a career out of your bitchface.
¯\_(ツ)_/¯
Make 'em walk a mile in your fishnets.
Join a cult, er, empire.
Don't get on his bad side! Oops, too late.
He's harmless... right?
Wow. That was uneventful.
Start the game.