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.
Completed the game in Classic Mode.
Experienced every traumatic encounter and made peace with your inner demons.
Collected all files.
Opened 16 lockers.
Opened all lockers.
Talked to Kidman about all of the photographic slides.
Acquired all standard weapons.
Collected all of the Mysterious Objects.
Used every Coffee Maker at least once.
Killed 2 or more enemies at once using oil on the ground.
Crafted every type of item at least once.
Completely upgraded all weapons.
Completed the game on Nightmare difficulty or higher.
Brought your own equipment to the barbecue this time. (Ch. 14)
Stopped a true believer from playing with his favorite toy. (Ch. 11)
Stunned an enemy standing in water using a Shock Bolt.
Killed 3 enemies using upgraded Smoke Bolts.
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)
Stomped and killed 15 fallen enemies.
Opted for a cinematic experience.
Completely upgraded all abilities.
Upgraded one of your Warden Crossbow bolts to max level.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Completed the game on Casual difficulty or higher.
Completed the game on Survival difficulty or higher.
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.
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.
Survived an ordeal with the help of a new friend.
Shut down a bloody performance.
Killed an enemy using an Ambush.
Upgraded a weapon to Level 3.
Found a potential ally in The Marrow.
Collected 20 files.
Defeated the Guardian outside City Hall.
Saw a chilling vision.
Killed 60 enemies.
Used your first Red Gel.
Completed the "Rogue Signal" side mission.
Used your first High-Grade Weapon Parts.
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.