Here is the full list of all 21 Havsala: Into the Soul Palace achievements.
Finish the game in a single take
Give only wrong answers for each memory test
Take more than 5 hints
Finish the game without taking any hints
Finish the game
Spread tarot more than 5 times
Do a tarot reading
Read the diaries of Salvino and Ynes
Collect each tarot card
Read all pages of every book in the library.
Complete Chapter Three
Ace the memory test
Place all three memoirs in the sacrarium
Poke the raven 20 times
Try solving the stargazing puzzle with half of the instructions
Complete Chapter Two
Give the book doge his bone
Read any diary from previous chapters
Complete Chapter One
Spend 5 minutes with the lyre without leaving
Solve the lyre puzzle on the first try