Here is the full list of all 54 Wetory achievements.
Tutorial Stage Death
Hidden Room Death
First Death to a Boss
First Item Acquisition
Clearing All Rooms in a Single Stage
Clearing a Stage Without Taking Damage
Rerolling Shop 7 Times in a Single Stage
Experiencing All Skill Trees
Having Currency Amount of 30 or More
Acquisition Reroll
First Death
Obtaining a Hat
Completing the Pet Set
Completing the Music Set
Completing the Roider Set
Completing the Clock Collector Set
Completing the Devil Set
Completing the Artist Set
Completing the Thorn Set
Completing the Joker Set
Completing the Icecream Set
Completing the Nobility Set
Completing the Bread Set
Completing the Hero Set
Full Stack of Stack Items
Clearing a Stage with 0 Currency
Not Spending Money in a Stage
Defeating Stage 1 Boss
Defeating Stage 2 Boss
Defeating Stage 3 Boss
Defeating Stage 4 Boss
Defeating Stage 5 Boss
Defeating Stage 6 Boss
Clearing Hidden Room in Stage 1
Clearing Hidden Room in Stage 2
Clearing Hidden Room in Stage 3
Clearing Hidden Room in Stage 4
Clearing Hidden Room in Stage 5
Entering Stage 6
First Purchase at the Shop
Cleaning Out the Shop
Clearing Normal Ending in Hard-to-Die Mode
Clearing Hidden Ending in Hard-to-Die Mode
Clearing Normal Ending in Easy-to-Give-Up Mode
Clearing Hidden Ending in Easy-to-Give-Up Mode
Obtaining 30 Gold with Pirate Hook
Acquiring Unknown's Glove Item
Acquiring Mixer Item
Acquiring MintChoco Bar Item
Resurrection with Ankh
Vampiric Feeding with Blood Thirst
Activating Cactus Item
Activating Drum Item
Completing the Entire Encyclopedia