Here is the full list of all 40 Little Goody Two Shoes achievements.
Achieve five hearts with someone.
Receive the Snake's curse.
Bring Rozenmarine along for a chore.
Spend 500 tiffle.
Prevail against the Crow.
Save Apfel from the Crow Woods.
Escape the Mari Lwyd's wrath.
Perish from low fullness.
Perish from low sanity.
Receive the Crow's curse.
Cover for Rozenmarine.
Find the Basket in the Witch Woods.
Perish from low health.
Listen to the Old Hag's story.
Find a Golden Maiden.
Achieve one heart with someone.
Discover the "thief" inside the granary.
Divert the villagers' suspicions away from you.
Defeat the Aventesma.
Prevail against the Snake.
Attend the Walpurgis Festival.
Find your way out of the Demon Woods.
Sacrifice Rozenmarine.
Sacrifice Freya.
Sacrifice Lebkuchen.
Sacrifice yourself for your beloved.
Bear witness to Elise and Rozenmarine's fate.
Bear witness to Elise and Freya's fate.
Bear witness to Elise and Lebkuchen's fate.
Become one with Rozenmarine.
Watch Elise's final punishment.
Succumb to the Witch's desire.
Uncover Father Hans' sinister plot.
Watch all endings.
Uncover the truth of the Golden Maidens.
Get an S rank on all chores.
Max out one relationship. The future seems bright for Elise and her beloved.
Get tried for witchcraft.
Successfully bribe Muffy for a whole week.
Earn all achievements.