Full list of all 71 The Evil Within achievements. It takes around 40-50 hours to unlock all of the achievements in the base game on Windows.
The base game contains 41 achievements, and there are 3 DLC packs containing 30 achievements.
Finish the game with a clear time of under 5:00:00
Complete the game on Nightmare difficulty.
Finish the game without upgrading any skills with green gel.
Finish the game on 悪夢(AKUMU) mode.
I'm not taking any chances, this bus can't take much more damage. (Ch. 12)
The water's rising, but we'll get out of this without a scratch. (Ch. 5)
Completely upgrade all weapons.
His engine roars, but my knife is strong enough to take him out. (Ch.3)
Sneak Kill an enemy after hitting them with a bottle.
Kill 5 enemies in a row with a sneak kill without being discovered.
Kill 25 enemies with melee attacks.
Kill 5 enemies with a torch.
Kill 5 enemies with each type of Agony Bolt.
Use a secret explosive weapon to kill 10 enemies. (Agony Bolt effects negate results)
Have they lost their minds? Better get past them without a fight. (Ch.2)
Completely upgrade three weapons.
This cave echoes like crazy. Better put the gun away and keep quiet. (Ch. 8)
Collect every collectable in the game.
Open up all the lockers in the save room.
Fully upgrade all of Sebastian's attributes.
Completely upgrade one weapon.
Upgrade all options in the Stock menu.
Kill 30 enemies.
Kill 200 enemies.
Kill 400 enemies.
Defeat the Sadist within the village.
Finish off a shrieking beast.
Take out both guardians before the church.
Escape the Keeper beneath the catacombs.
End a monstrosity in the underground garage.
Outrun a gigantic threat in the city.
Remove an invisible enemy from the equation.
Defeat the ultimate evil within.
Complete the game on Casual difficulty.
Complete the game on Survival difficulty.
Kill 3 living enemies with one drop of a match.
That vision in the hospice... why here? Why now? (Ch. 4)
Who wouldn't reach out for a man clinging for his life? (Ch. 6)
It won't stay dead! Better only fight when I have to. (Ch. 7)
Enough running! I'll burn her to the ground right here! (Ch. 10)
I should get this whole generator panel running just in case. (Ch. 14)
Get a Cadaver to grab and kill a Haunted. (Ch. 2)
Clear The Assignment in KURAYAMI Mode.
Use a single trap to kill two or more enemies in The Assignment. (Ch. 2)
Survive the duel without using any electronic devices in the environment. (Ch. 2)
Lure an enemy with a phone call and lock them in a room. (Ch. 1)
Clear Chapter 1, "An Oath."
Clear Chapter 2, "Crossing Paths."
Collect all Research Documents in The Assignment.
Collect all Personnel Files in The Assignment.
Complete the hidden letter in The Assignment.
Purchase all items in the Shop.
Clear The Executioner without taking any damage.
Complete all Torments.
Get payback on the cop who took down your predecessor.
Use Executions on 20 basic Haunted.
Kill 10 basic Haunted with environmental traps in The Executioner.
Kill 10 basic Haunted with the chainsaw.
Collect all Daughter's Diaries in The Executioner.
Clear the first and second floors of the manor house in The Executioner.
Clear the basement of the manor house in The Executioner.
Clear The Consequence in KURAYAMI Mode.
Defeat Ruvik before the final showdown in The Consequence. (Ch. 4)
Get through the hotel without being spotted or killing any enemies. (Ch. 4)
Turn on the generator using no more than 10 chemical lights. (Ch. 3)
Save Sebastian's life in the hotel. (Ch. 4)
Clear Chapter 3, "Illusions."
Clear Chapter 4, "A Ghost is Born."
Collect all Research Documents in The Consequence.
Collect all Personnel Files in The Consequence.
Complete the hidden letter in The Consequence.