Here is the full list of all 21 Dark Nights with Poe and Munro achievements.
You did a very very bad job of saving Joe.
Poe and Munro chose the same number of books.
You got Poe and Munro to kiss and make up.
You copied Munro's work.
You got Poe and Munro to sing a song.
You made all nine callers disappear.
You played all six episodes. Our hero!
You wished for love over intellect.
You left Kasper with no other choice.
You rocked rock, paper, scissors!
You asked everyone about the whistle, but you're none the wiser.
You let Poe do the talking.
Elizabeth got what she wished for.
You used Munro's safeword.
You raised Violet's suspicions.
You got Poe and Munro to dance.
You gave Poe a taste of his own medicine.
You destroyed the evidence.
You left Poe for dead.
You played the first episode. Don't stop now!
You played the cat sound effect!