Here is the full list of all 64 Winter Voices achievements.
Complete the sixth episode.
Complete the whole Season 1 of Winter Voices.
Complete the whole Season 1 of Winter Voices while playing a Volva.
Complete the whole Season 1 of Winter Voices with more than 500 memory.
Win every Memory of the Season I of Winter Voices.
Achieve a 100% success in every encounter of the sixth episode.
Achieve a 100% success in every encounter of the sixth episode while playing a Volva with a maximum memory.
Win the last battle of the first season by denying all the shadows statements.
Here's an achievement for not falling asleep.
In the third phase of the "Life" encounter, survive 1 minute. This achievement won't be granted if you're under the protection of "Then We'll Come From The Shadow".
Complete the "Secret of the Norns Quest" (DLC) with 100% success in every battle.
Win the Secret of the Norns encounter without killing any enemy.
Complete the fourth episode after having eliminated every opponent when it was possible.
Be sick at least once.
Complete the fourth episode without activating any Inferno or hidden Inferno.
Obtain the best score in every major quest of the boat. (Knots, Loading, Rhum)
During an encounter with them, get hit by an Uncertain Mystery at a distance of 10 or more.
Complete the fifth episode.
Achieve a 100% success in every encounter of the fifth episode.
Achieve a 100% success in every encounter of the fifth episode while playing a Volva with a maximum memory.
In the "Questions" encounter, finish with 140% success or more.
Hire Chichi.
Sadly there is no voiceover for this.
Finish the "Winter Voices, II" encounter in less than 18 turns.
In the "Desert, III" encounter, finish with more than 120% success.
In the "When I Was Little" encounter, make the memories transform next to you.
Complete the fourth episode.
Achieve a 100% success in every encounter of the fourth episode.
Achieve a 100% success in every encounter of the fourth episode while playing a Volva with a maximum memory.
Obtain the worst score in every major quest of the boat. (Knots, Loading, Rhum)
It was only a short moment...
Complete the Hall of the Invisible Kingdom in 4 turns or less.
Achieve a 100% success in every encounter of the third episode while playing a Volva with a maximum memory.
Burn down your shadow in 10 turns or less.
Win the mountain last encounter without losing more than 10% of your life.
Pass through the mountain's shadow in 10 turns or more.
Achieve a 100% success in every encounter of the second episode while playing a Volva with a maximum memory.
Achieve a 100% success in every encounter of the first episode while playing a Volva with a maximum memory.
Achieve a 100% success in every encounter of the prologue.
Achieve a 100% success in every encounter of the prologue while playing a Volva with a maximum memory.
Win the last encounter of the Prologue without losing more than 10% of your life.
Leave the Seid after completing the Difficult Path.
Nice boat. Nom nom nom.
Complete the third episode.
Achieve a 100% success in every encounter of the third episode.
Win 50 encounters.
Pass through the mountain's shadow in 4 turns or less.
End the ceremony with the 6 initial vivacious memories still present.
In the village at the foot of the mountain, win the secret encounter in 10 turns or less.
Complete the second episode.
Hire Ven.
Achieve a 100% success in every encounter of the second episode.
Complete the first episode.
Achieve a 100% success in every encounter of the first episode.
Achieve a 100% success in the third encounter of the prologue (departure of the father) after walking on the "Summer Scent".
Sob or Sniff 20 times.
Complete the Prologue.
Hire the Crow.
Leave the never-ending house without surrendering (!) until the end.
Leave the Seid without taking the Difficult Path.
Watch the Funeral Pyre.
Complete the whole Season 1 of Winter Voices while playing a Huntress.
Complete the whole Season 1 of Winter Voices while playing a Weaveress.
Complete the whole Season 1 of Winter Voices without any friend. (Imaginary Friend counts as a friend)