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.
Find an obscure reference
Find the hidden developer room
Get all awards in a level
Find the idol of the ancient god
Beat the Forges
Rest easy.
Beat the Abyss
Beat the Arcane Expanse
Destroy all decorations in a level
Find Evil Difficulty
Don't pickup anything in a level
Beat Solar Solstice
Beat the Sacred Path
Banish 10 enemies into a black hole
Experience each type of death
Beat Domain of the Sentinels
Finish a level with full mana
Use each weapons soul mode attack once
Destroy 5 enemies with a single sun
Finish a level with no mana
Finish a level with less than 10 health
Finish a level with soul mode on
Kill all enemies in an episode
Use the Axe underwater, in soul mode.
Die in the Gateway
Kill 10 enemies in under 10 seconds with the Axe
Blow up the earth
Get 100 Overkills
Read all inscriptions in a level.
Find all the secrets in a level
Beat Astral Equinox
Extend soul mode for 30 seconds
Use a cheat code
Get through a level without killing anything
Beat a level's par time
Quit the game
Kill all enemies in a level
Defeat the creature
Beat the Black Labyrinth
Find the 3 Developer Artifacts
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