Full list of all 43 AMID EVIL achievements. It takes around 12-15 hours to unlock all of the achievements in the base game on Windows.
The base game contains 37 achievements, and there is 1 DLC pack containing 6 achievements.
Rest easy.
Find the hidden developer room
Beat the Abyss
Beat the Arcane Expanse
Get through a level without killing anything
Finish a level with full mana
Beat the Forges
Experience each type of death
Find the idol of the ancient god
Finish a level with less than 10 health
Finish a level with no mana
Get all awards in a level
Find an obscure reference
Don't pickup anything in a level
Beat a level's par time
Beat Solar Solstice
Banish 10 enemies into a black hole
Kill 10 enemies in under 10 seconds with the Axe
Find Evil Difficulty
Use the Axe underwater, in soul mode.
Use a cheat code
Extend soul mode for 30 seconds
Die in the Gateway
Beat the Sacred Path
Finish a level with soul mode on
Use each weapons soul mode attack once
Destroy all decorations in a level
Kill all enemies in an episode
Find all the secrets in a level
Destroy 5 enemies with a single sun
Beat Domain of the Sentinels
Read all inscriptions in a level.
Get 100 Overkills
Blow up the earth
Beat Astral Equinox
Quit the game
Kill all enemies in a level
Find the 3 Developer Artifacts
Defeat the creature
Beat the Black Labyrinth
Kill 10 enemies with the Void Splitter's soul mode attack
Defeat the Thunder Spirit
Kill 15 enemies in under 10 seconds with the gauntlets