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.
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.
Came to terms with your past and present.
Reminisced about every moment from your past. (Ch. 12)
Stopped a true believer from playing with his favorite toy. (Ch. 11)
Provided a Harbinger sweet release.
Experienced every traumatic encounter and made peace with your inner demons.
Completed the "The Last Step" side mission.
Upgraded one of your Warden Crossbow bolts to max level.
Killed 3 enemies using upgraded Smoke Bolts.
Survived an ordeal with the help of a new friend.
Stomped and killed 15 fallen enemies.
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)
Shut down a bloody performance.
Found a potential ally in The Marrow.
Collected 20 files.
Defeated the Guardian outside City Hall.
Saw a chilling vision.
Completed the "Rogue Signal" side mission.
Upgraded a weapon to Level 3.
Crafted something for the first time.
Killed an enemy using an Ambush.
Used your first High-Grade Weapon Parts.
Killed 60 enemies.
Used your first Red Gel.
Killed 2 or more enemies at once using oil on the ground.
Killed 30 enemies.
Killed 10 enemies using Sneak Kills.
Stunned an enemy standing in water using a Shock Bolt.
Acquired the Warden Crossbow.
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.
Collected all files.
Opened 16 lockers.
Opened all lockers.
Acquired all standard weapons.
Used every Coffee Maker at least once.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Opted for a cinematic experience.