Ongoing: Hollow Knight (Hitless PB is now 1 hit)
Platformers: Focusing on Hollow Knight hitless attempts
Adventure/Puzzle: World of Goo, Lamplight City
Coop Games: Overcooked 2 potentially soon
Other: Bastian, Hades, Elden Ring, The Long Dark
Considering Soon: The Talos Principle 2, Metro Exodus, Death Stranding, Blasphemous, Have a Nice Death, DA: Inquisition, Dyson Sphere Program, Crash Bandicoot, Spyro, Ori WOTW, Cuphead DLC

Tetris Effect: Connected (I think this will be very difficult)
A Hat in Time (with DLC - and a coop achievement needed)
Cuphead (DLC content)
Portal 2 Coop Achievements (only a handful left now)
Sonic Generations (maybe)
The Escapists 2 (probably with some multiplayer)
State of Decay 2 (will take lots of time however)
Elden Ring??
Shovel Knight (entire collection) possibly

Doors (No one knows how to get last achievement)
Tomb Raider and Rise of Tomb Raider (Multiplayer)
Batman Arkham Origins (Multiplayer)
Grand Theft Auto V (Only 1 Doomsday Achievement left)

Usually, but not always, “Profile Features Limited” or similar tagged games will not count.
(The perfect games list on Steam gives a different total than the actual profile page total)
Crossed out items are impossible to complete, or were completed before updates or DLC.
Total including crossed out, or "Profile Features Limited" games: 285
List is sorted the same as the Steam “Perfect Games” list (with some exceptions for sequels).

198X
7 Billion Humans
7th Sector
8Doors: Arum's Afterlife Adventure
A Date in the Park
A Good Snowman is Hard to Build
A Hat In Time (before Sept 2018 DLC)
A Musical Story
a new life.
A Plague Tale: Innocence
A Short Hike
A Way Out
ABZU
Agent A: A puzzle in disguise
Alien: Isolation
American Truck Simulator (before DLC)
Amanda the Adventurer
Ampu-Tea
Anomaly Exit
Antenna
AntVentor
Arise: A Simple Story
Astroneer
Axiom Verge
Baba is You
Backfirewall_
Batman Arkham Asylum
Batman Arkham City (Allowed System Date changing)
Batman Arkham Knight
Batman Arkham Origins: Blackgate (Origins needs multiplayer)
Battleblock Theater
Bendy and the Ink Machine (including Halloween 2024 Update)
Biped
Black Mesa
Black The Fall
Bots Are Stupid
Bridge Constructor (inlcuding DLC and seasonal updates)
Bridge Constructor Medieval
Brothers: A Tale of Two Sons
Buddy Simulator 1984
Call of the Sea
Cats Organized Neatly
Celeste (including added level 9)
Chill Corner (including 4.0 update)
CHUCHEL
Close to the Sun
Closure
Collisions (Allowed System Date changing)
Conan Exiles (including Isle of Siptah DLC)
Contrast
Cuphead (Before The Delicious Last Course DLC)
Cypher (OK... I cheated and looked up a lot of these)
DARQ
Dave (Profile Features Limited)
Day of the Tentacle Remastered
Dear Esther - Landmark Edition
Death Squared (required older version of game)
Defense Grid: The Awakening
Deliver Us The Moon
Deliver Us Mars
Deponia
Chaos on Deponia
Goodbye Deponia
Deus Ex: Human Revolution
Deus Ex: Human Revolution Missing Link DLC
Diner Bros (now including all DLC)
Distant Space
Donut County
DOOM I + DOOM II
Doors (no one knows how to get last achievement)
Dread X Collection
Dread X Collection 2
Dust: An Elysian Tale
Embers of Mirrim
Euro Truck Simulator 2 (before DLC came out)
Evoland
Evoland 2
Evoland Legendary Edition
Far: Changing Tides
Far: Lone Sails
Farm Together
Firewatch
Florence
Forgiveness (Escape Room)
Four Sided Fantasy
Full Throttle Remastered
Furi
Game of Thrones Telltale Series
GAME.exe
GET EVEN
Getting Over It with Bennett Foddy (used own save states after first 3 runs)
Ghost of a Tale
GNOG
Golf With Your Friends (Before Corrupted Forest DLC}
Gone Home
Gorogoa
Grand Theft Auto V (before Doomsday update)
Grim Fandango Remastered
Hardspace: Shipbreaker
Hellblade: Senua's Sacrifice
Helltaker (free game) (including May 2021 update)
Hexcells
Hexcells Plus
Hexcells Infinite
Hidden Folks (including new free content released Jun/4/2020)
Himno
Hollow Knight (including Godmaster and all previous DLC)
Human Resource Machine
I Am Fish
Ibb & Obb
I'm on Observation Duty
I’m on Observation Duty 2
Infinifactory
INMOST
Inscryption
INSIDE
It Takes Two
Journey
Jurassic Park: The Game (Telltale)
Keep Talking and Nobody Explodes
KIT-10 (Profile Features Limited)
L.A. Noire
Last Day of June
Late Shift
Leaving Lyndow
Life is Strange
Lightmatter
LIMBO
Little Inferno
Little Misfortune
Little Nightmares
LOVE
Machinarium
Manifold Garden
Marvel’s Spider-Man Remastered
Mega Man 11
Mega Man Legacy Collection
Mega Man Legacy Collection 2
Metro: Last Light Redux (first metro had too many BS achievements)
Milk inside a bag of milk inside a bag of milk
Milk outside a bag of milk outside a bag of milk
missed messages.
Monkey Island 2: Special Edition (only MI2 and Return have achievements)
Return to Monkey Island
Moving Out
Neo Cab
NeonCode (Profile Features Limited)
Never Again
Never Alone
Neverending Nightmares
Not Tonight
Nova-111
Observer
Oceanhorn: Monster of Uncharted Seas
Octodad: Dadliest Catch
Operation Tango
Orwell
Outer Wilds
Overcooked
Overcooked 2 (including all DLC)
Pacific Drive
Papers, Please
Path of Giants
Phasmophobia
Placid Plastic Duck Simulator before Feb 2023 DLC
Platform 8
Please, Don't Touch Anything
Poker Night 2
Pony Island
Portal
Portal Stories: Mel
Portal with RTX
Portal: Revolution
Prey (2017)
Puddle
Quadrilateral Cowboy
Quake
Quantum Break
Randal's Monday
realMyst: Masterpiece Edition
Resident Evil 2 Remake
Resident Evil 3 Remake
ReThink
Return of the Obra Dinn
Reventure (including Update)
Rocket League
Seasons After Fall
Shadow Bug
Shadow of the Tomb Raider
Shady Part of Me
SIMULACRA
Sleeping Dogs
Slipstream
Sniper Elite 4
Sniper Elite: ♥♥♥♥ Zombie Army
Sniper Elite: ♥♥♥♥ Zombie Army 2
SOMA
Sonic Mania
Sonic the Hedgehog 4 - Episode I
Stacking
STAR WARS Jedi: Fallen Order™
Stardew Valley (including 1.6 update)
Stasis
State of Decay
State of Decay: Year-One Survival Edition
State of Mind
Stela
Stray
Streets of Rage 4 (including Mr. X DLC)
Subnautica
Subnautica: Below Zero
Super Blood Hockey
SUPERHOT
Superliminal
Tales from Space: Mutant Blobs Attack
Terminator: Resistance (including Annihilation Line DLC)
The Artifact
The Bridge
The Collider
The Corridor
The Elder Scrolls V: Skyrim (levelled with console to allow legendary dragon spawns)
The Entropy Centre
Exit 8
The Forgotten City
The Gardens Between
The Gunk
The Hex
The House of Da Vinci
The Looker
The Messenger
The Mortuary Assistant (including Definitive Edition Update)
The Mummy Demastered
The Painscreek Killings
The Pedestrian
The Red Strings Club
The Room
The Room Two
The Room Three
The Room 4: Old Sins
The Spectrum Retreat
The Stanley Parable (now with all legit methods)
The Swapper
The Talos Principle (including DLC)
The Town of Light
The Turing Test
The Unfinished Swan
The Walking Dead 1
The Walking Dead 2
The Walking Dead New Frontier
The Walking Dead Michone
The Walking Dead The Final Season
The Witness
The Wolf Among Us
Thimbleweed Park
Thumper
Titan Chaser
To The Moon
Unforeseen Incidents
Untitled Goose Game
Vampire Survivors (including all DLC)
Velocibox
Vessel
Virtual Cottage (manipulated PC Time for one achievement)
VirtuaVerse
Viscera Cleanup Detail
Viscera Cleanup Detail: Santa's Rampage
Viscera Cleanup Detail: Shadow Warrior
We Were Here
We Were Here Too
We Were Here Together
We Were Here Forever
We Were Here Expeditions: The FriendShip
What Never Was (free) (Profile Features Limited)
What Remains of Edith Finch
White Shadows
Wolfenstein: The New Order
Wordle
Wordle 2
Wordle 3
Wordle 5 (Profile Features Limited)
You Will Never Get This Achievement
Zombie Army Trilogy
Zup!
Zup! 2
Zup! 3