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