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.
Completely upgraded all abilities.
Killed 2 or more enemies at once using oil on the ground.
Crafted every type of item at least once.
Acquired all standard weapons.
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.
Observed all Residual Memories.
Reached the very end of the world.
Killed 3 enemies using upgraded Smoke Bolts.
Your trauma is no more.
Brought your own equipment to the barbecue this time. (Ch. 14)
Opened all lockers.
Collected all files.
Made it inside the enemy's stronghold.
Talked to Kidman about all of the photographic slides.
Completed the "The Last Step" side mission.
Used every Coffee Maker at least once.
Came to terms with your past and present.
Reminisced about every moment from your past. (Ch. 12)
Upgraded one of your Warden Crossbow bolts to max level.
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.
Survived an ordeal with the help of a new friend.
Shut down a bloody performance.
Avoided unnecessary bloodshed outside City Hall. (Ch. 5)
Opened 16 lockers.
Found a potential ally in The Marrow.
Collected 20 files.
Defeated the Guardian outside City Hall.
Upgraded a weapon to Level 3.
Stomped and killed 15 fallen enemies.
Saw a chilling vision.
Used your first Red Gel.
Killed 60 enemies.
Killed an enemy using an Ambush.
Completed the "Rogue Signal" side mission.
Killed 30 enemies.
Used your first High-Grade Weapon Parts.
Killed 10 enemies using Sneak Kills.
Stunned an enemy standing in water using a Shock Bolt.
Acquired the Warden Crossbow.
Crafted something for the first time.
Took the plunge back into STEM.
Completed the game in Classic Mode.
Completely upgraded all weapons.
Killed 2 or more enemies at once using a hanging lamp. (Ch. 9)