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