Here is the full list of all 41 Foretales achievements.
Fight for the miners
Save your best friend
Free Léo from prison without triggering the alarm
Finish the first chapter
Finish the second chapter
Finish the third chapter
Live a long life of regrets
She came back from the void
And all was well
Partake in the destruction of the world
Find a way to mess with the ritual
He was there all along!
Work with the Council of Mothers
Sail the seas
Don't become a murderer
Explore the sacred temple
Dupe Lady Katell
Save the snake thief 3 times
Volepainses everywhere
Defend Pattenbois in a perfect trial
Let the gods decide if Pattenbois is guilty
Get your hands on the ultimate weapon
Show someone their own grave
Capture Hector alive
Prevent Isabeau's assassination
Make the bard sing his dirtiest song ever
Get a much stronger envoy of the Council
Defeat the trial of the chain without using a blade
Get the two rapiers without killing their owners
Reunite a brother and a sister who have not seen each other for a looooong time...
Cook the best turtle meal
Lead The Rebellion without anyone in the graveyard
Spare the end of the world to one of your friends
Get sent to high security prison without blood on your hands
Make Rainier abandon just using your Fame
Get one of your character's health points to 18 or above
Get one of your character's attack score to 6 or above
Spend at least 10 gold in a single confrontation
Dispatch 6 infested without killing them in a single fight
Deal at least 4 damage with Deal Breaker
Have 6 creatures on your side in a single confrontation