Here is the full list of all 16 Legend of Dungeon achievements.
Fall into Lava
Die in the Tavern
You brought the treasure back!
You brought the treasure back 5 times!
You brought the treasure back 10 times!
Beat the game on Impossible Mode
Play the game 100 times without winning
Change in the bathroom 100 times
Die from Kitten Wraiths
Die from Alcohol poisoning
Kill Every Boss
Kill Every Boss in a Single Run
Beat the game without picking up the Lantern
No one will believe you anyway.
beat the game in multiplayer
Shoot and kill a teammate