Here is the full list of all 51 The Evil Within 2 achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Collected all files.
Opened 16 lockers.
Killed an enemy using an Ambush.
Completely upgraded all abilities.
Upgraded one of your Warden Crossbow bolts to max level.
Talked to Kidman about all of the photographic slides.
Completed the game on Casual difficulty or higher.
Did what needed to be done to save your daughter.
Reached the very end of the world.
Your trauma is no more.
Made it inside the enemy's stronghold.
Completed the "The Last Step" side mission.
Came to terms with your past and present.
Upgraded a weapon to Level 3.
Provided a Harbinger sweet release.
Experienced every traumatic encounter and made peace with your inner demons.
Used every Coffee Maker at least once.
Survived an ordeal with the help of a new friend.
Killed 10 enemies using Sneak Kills.
Shut down a bloody performance.
Killed 2 or more enemies at once using oil on the ground.
Used your first Red Gel.
Found a potential ally in The Marrow.
Collected 20 files.
Defeated the Guardian outside City Hall.
Killed 60 enemies.
Saw a chilling vision.
Used your first High-Grade Weapon Parts.
Completed the "Rogue Signal" side mission.
Killed 30 enemies.
Crafted something for the first time.
Stunned an enemy standing in water using a Shock Bolt.
Acquired the Warden Crossbow.
Took the plunge back into STEM.
Completed the game on Survival difficulty or higher.
Completed the game on Nightmare difficulty or higher.
Completed the game in Classic Mode.
Completely upgraded all weapons.
Crafted every type of item at least once.
Observed all Residual Memories.
Opened all lockers.
Acquired all standard weapons.
Collected all of the Mysterious Objects.
Killed 3 enemies using upgraded Smoke Bolts.
Stomped and killed 15 fallen enemies.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)
Stopped a true believer from playing with his favorite toy. (Ch. 11)
Reminisced about every moment from your past. (Ch. 12)
Brought your own equipment to the barbecue this time. (Ch. 14)
Opted for a cinematic experience.