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