Here is the full list of all 36 TinyKeep achievements.
Access the developer's office
Unlock the Final Weapon
Befriend a Baby Dragon
Reach the Alternate Demonsion
Leave Maggie behind in the dungeon
Give your friend and ally what was coming to her
Witness a Dungeon Party
Resurrect from the dead
Discover the secret shop entrance
Find a use for that damn acid cauldron
Discover the Flaming Sword
Master the ability to bend time
Incur the wrath of Maggie
Deflect a magical projectile
Beat Level 5
Grace the dungeon with an air of elegance and sophistication
Disregard the principles of permadeath
Ascend to the overgrown surface
Discover the hidden stash of gold
Release the horde
Sacrifice gold to the higher gods
Destroy your first crystal
Defeat the first boss
Discover a treasure chest
Sacrifice gold to the gods
Die the first time
Release your first prisoner
Kill your first hostile
Find a Sword
Find a Shield
Complete the game without directly killing any enemies
Complete the game without being hurt at all
Complete the game without using a shrine once
Complete the game without eating a single piece of food
Complete the game without a shield
Complete the game in New Game+ mode