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.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Talked to Kidman about all of the photographic slides.
Opted for a cinematic experience.
Used every Coffee Maker at least once.
Completed the game on Casual difficulty or higher.
Completed the game on Survival difficulty or higher.
Completed the game on Nightmare difficulty or higher.
Did what needed to be done to save your daughter.
Observed all Residual Memories.
Collected 20 files.
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.
Completed the "The Last Step" side mission.
Came to terms with your past and present.
Killed 3 enemies using upgraded Smoke Bolts.
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)
Opened 16 lockers.
Survived an ordeal with the help of a new friend.
Killed 2 or more enemies at once using oil on the ground.
Killed 10 enemies using Sneak Kills.
Stomped and killed 15 fallen enemies.
Acquired all standard weapons.
Killed an enemy using an Ambush.
Crafted every type of item at least once.
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.
Defeated the Guardian outside City Hall.
Completely upgraded all abilities.
Used your first Red Gel.
Killed 60 enemies.
Saw a chilling vision.
Upgraded one of your Warden Crossbow bolts to max level.
Upgraded a weapon to Level 3.
Used your first High-Grade Weapon Parts.
Completed the "Rogue Signal" side mission.
Stunned an enemy standing in water using a Shock Bolt.
Acquired the Warden Crossbow.
Killed 30 enemies.
Crafted something for the first time.
Took the plunge back into STEM.
Completed the game in Classic Mode.
Experienced every traumatic encounter and made peace with your inner demons.
Completely upgraded all weapons.
Collected all files.
Opened all lockers.
Collected all of the Mysterious Objects.