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.
Brought your own equipment to the barbecue this time. (Ch. 14)
Opened all lockers.
Talked to Kidman about all of the photographic slides.
Completely upgraded all weapons.
Stopped a true believer from playing with his favorite toy. (Ch. 11)
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)
Observed all Residual Memories.
Stomped and killed 15 fallen enemies.
Completely upgraded all abilities.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Opened 16 lockers.
Killed 3 enemies using upgraded Smoke Bolts.
Upgraded one of your Warden Crossbow bolts to max level.
Crafted every type of item at least once.
Opted for a cinematic experience.
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.
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.
Reminisced about every moment from your past. (Ch. 12)
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.
Shut down a bloody performance.
Stunned an enemy standing in water using a Shock Bolt.
Upgraded a weapon to Level 3.
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.
Used your first High-Grade Weapon Parts.
Killed 2 or more enemies at once using oil on the ground.
Killed 60 enemies.
Completed the "Rogue Signal" side mission.
Killed an enemy using an Ambush.
Killed 30 enemies.
Killed 10 enemies using Sneak Kills.
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.
Collected all files.
Acquired all standard weapons.