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