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