Here is the full list of all 24 Estencel achievements.
Get to the Green Roofs District.
Survive the encounter with the Wolf Monster.
Start a new game.
Defeat the Esten Guardian.
Defeat the Kovales.
Defeat the Wolf Monster.
Get to the Estencel.
Get to the Miriecel.
Defeat the Toll Doll.
Defeat the Blue Guardian.
Defeat the Third Guardian.
Defeat Prisoner Richard.
Collect all parts of the Reverse White Symbol.
Get to the Esten Castle.
Survive the encounter with the Greater Est.
Get to the Esten Palace.
Defeat the Supreme Creation of Whiteness.
Leave the Esten lands.
Smash all the Lampheads.
Collect all the Hats.
Collect all the Coats.
Collect all the Weapons.
Complete all achievements.