Here is the full list of all 27 One Night Stand achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
You chose not to believe anything.
You might want to double check the evidence...
Accuse her of drugging you.
You receive another message from Gary.
You made a break for it.
She picked up her six-string.
You got thrown out without your clothes.
You investigated every item in the game.
You failed at the last hurdle.
Escaped during her moment of need.
What’s in a name anyway?
You told her the last name that she wanted to hear.
Honesty really is the best policy.
Turns out you share the same name!
You choose to remain silent whenever possible.
Order a fancy coffee.
You got caught wearing her underwear.
You became a fan of Love IRL.
You both felt the same way about the book, her writing and Love IRL.
You became friends.
Escaped quickly and clothed.
You successfully stole a pair of her panties.
That's why they call it a one night stand.
Sharing isn't caring.
You got rejected.
You got thrown out.
You got thrown out with your clothes on.