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