Here is the full list of all 21 Faerie Afterlight achievements.
Get out of The Abyss and start the journey
Killed 100 enemies
Control 100 enemies
Earn 1000 Dias
Defeat Dinchara
Defeat Notia
Defeat Thoram
Defeat Quinn
Defeat Lou
Defeat Kradyrev
Defeat Kradyrev’s Evil Mind
Waking the bird
Reveal Kradyrev’s truth in The Abyss
Collect All Cuneiforms
Collect All Diaries
Get All Kimo’s Abilities
Get All Wispy’s Abilities
Get the normal ending
Get the true ending
Get all Talya’s maps
Help Tonn and meet Elle