Here is the full list of all 13 Little Dungeon Stories achievements.
Defeat the great Toxin Gall
Defeat the Jazzek for the first time
Defeat the Scourger for the first time
You repaired your own weapons
Some help from God
Defeat Ungagh for the first time
Win a Fortune Teller game
You made your own potions
An improved magic sip
The doll is in the place
A free win
Defeat Mother Werewolf for the first time
You have defeated the Dungeon!