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 on Casual 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.
Brought your own equipment to the barbecue this time. (Ch. 14)
Collected all files.
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)
Opened 16 lockers.
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.
Upgraded one of your Warden Crossbow bolts to max level.
Killed 2 or more enemies at once using oil on the ground.
Killed an enemy using an Ambush.
Found a potential ally in The Marrow.
Stomped and killed 15 fallen enemies.
Collected 20 files.
Defeated the Guardian outside City Hall.
Stunned an enemy standing in water using a Shock Bolt.
Saw a chilling vision.
Completed the "Rogue Signal" side mission.
Upgraded a weapon to Level 3.
Used your first High-Grade Weapon Parts.
Used your first Red Gel.
Killed 60 enemies.
Killed 30 enemies.
Acquired the Warden Crossbow.
Killed 10 enemies using Sneak Kills.
Crafted something for the first time.
Took the plunge back into STEM.
Completed the game on Survival difficulty or higher.
Completed the game on Nightmare difficulty or higher.
Completed the game in Classic Mode.
Completely upgraded all abilities.
Completely upgraded all weapons.
Crafted every type of item at least once.
Opened all lockers.
Talked to Kidman about all of the photographic slides.
Acquired all standard weapons.
Collected all of the Mysterious Objects.
Killed 3 enemies using upgraded Smoke Bolts.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Opted for a cinematic experience.