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.
Opened all lockers.
Collected all files.
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)
Completely upgraded all weapons.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Completely upgraded all abilities.
Opened 16 lockers.
Crafted every type of item at least once.
Acquired all standard weapons.
Upgraded one of your Warden Crossbow bolts to max level.
Killed 3 enemies using upgraded Smoke Bolts.
Opted for a cinematic experience.
Completed the game on Casual difficulty or higher.
Completed the game on Survival difficulty or higher.
Completed the game on Nightmare 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.
Killed 2 or more enemies at once using oil on the ground.
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.
Stomped and killed 15 fallen enemies.
Found a potential ally in The Marrow.
Collected 20 files.
Defeated the Guardian outside City Hall.
Saw a chilling vision.
Upgraded a weapon to Level 3.
Completed the "Rogue Signal" side mission.
Killed 60 enemies.
Used your first Red Gel.
Killed an enemy using an Ambush.
Killed 30 enemies.
Used your first High-Grade Weapon Parts.
Stunned an enemy standing in water using a Shock Bolt.
Acquired the Warden Crossbow.
Killed 10 enemies using Sneak Kills.
Crafted something for the first time.
Took the plunge back into STEM.