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