Full list of all 71 The Evil Within achievements worth 1,735 gamerscore. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 41 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 30 achievements worth 735 Gamerscore.
Killed 5 enemies in a row with a sneak kill without being discovered.
Drove down the highway without hitting a single enemy in Chapter 12.
Finished Chapter 8 without firing a single weapon.
Took out the Sadist with a sneak kill in Chapter 3.
Collected every collectable in the game.
Escaped from the Catacombs killing only 2 Keepers in Chapter 7.
Opened up all the lockers in the save room.
Completely upgraded all weapons.
Opened the gate to the village without killing a single enemy in Chapter 2.
Powered up all electrical equipment simultaneously in the subway in Chapter 14.
Completely upgraded three weapons.
Defeated Laura before riding the elevator in Chapter 10.
Killed 5 enemies with each type of Agony Bolt.
Upgraded all options in the Stock menu.
Saved Joseph from falling off a ledge in Chapter 6.
Rescued Kidman without Joseph taking any damage in Chapter 5.
Fully upgraded all of Sebastian's attributes.
Killed 10 enemies using the Rocket Launcher.
Completed the game on Casual difficulty.
Completed the game on Survival difficulty.
Defeated the ultimate evil within.
Removed an invisible enemy from the equation.
Completely upgraded one weapon.
Sneak Killed an enemy after hitting them with a bottle.
Outran a gigantic threat in the city.
Killed 400 enemies.
Ended a monstrosity in the underground garage.
Killed 25 enemies with melee attacks.
Escaped the Keeper beneath the catacombs.
Killed 200 enemies.
Took out both guardians before the church.
Killed 5 enemies with a torch.
Finished off a shrieking beast.
Killed 3 living enemies with one drop of a match.
Experienced the vision in the Hospice in Chapter 4.
Defeated the Sadist within the village.
Killed 30 enemies.
Complete the game on Nightmare difficulty
Finish the game with a clear time of under 5:00:00.
Finish the game without upgrading any skills with green gel.
Finish the game on 悪夢(AKUMU) mode.
Cleared The Assignment in KURAYAMI Mode.
Completed the hidden letter in The Assignment.
Collected all Research Documents in The Assignment.
Survived the duel without using any electronic devices in the environment. (Ch. 2)
Collected all Personnel Files in The Assignment.
Got a Cadaver to grab and kill a Haunted. (Ch. 2)
Cleared Chapter 2, "Crossing Paths."
Used a single trap to kill two or more enemies in The Assignment. (Ch. 2)
Cleared Chapter 1, "An Oath."
Lured an enemy with a phone call and locked them in a room. (Ch. 1)
Cleared The Consequence in KURAYAMI Mode.
Collected all Research Documents in The Consequence.
Got through the hotel without being spotted or killing any enemies. (Ch. 4)
Completed the hidden letter in The Consequence.
Saved Sebastian's life in the hotel. (Ch. 4)
Collected all Personnel Files in The Consequence.
Turned on the generator using no more than 10 chemical lights. (Ch. 3)
Cleared Chapter 4, "A Ghost is Born."
Didn't really Defeat Ruvik before the final showdown. (Ch. 4)
Cleared Chapter 3, "Illusions."
Cleared The Executioner without taking any damage.
Purchased all items in the Shop.
Completed all Torments.
Killed 10 basic Haunted with the chainsaw.
Got payback on the cop who took down your predecessor.
Collected all Daughter's Diaries in The Executioner.
Cleared the basement of the manor house in The Executioner.
Killed 10 basic Haunted with environmental traps in The Executioner.
Cleared the first and second floors of the manor house in The Executioner.
Used Executions on 20 basic Haunted.