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