Here is the full list of all 84 OMORI achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Take the KEEPER OF THE CASTLE's power.
Unlock all achievements. Thank you for playing OMORI.
Defeat every SOMETHING at the bottom of the LOST LIBRARY.
Defeat PERFECTHEART.
Complete the FOE FACTS! journal.
Defeat MUTANTHEART.
Beat the BOSS RUSH.
Defeat ROBOHEART.
Commission all of GATOR GUY's statues.
Recover at all of MARI's picnics.
Defeat SPACE EX-HUSBAND.
Visit all mirrors.
Look through all telescopes.
Let the plastic fish finish its song.
Defeat PLUTO and THE EARTH.
Get the FLOWER CROWN from BASIL.
Complete your TO-DO LIST.
Get all rewards from the RECYCLING MACHINE.
Commission all of ROCOCO's art.
Defeat 100 SQUIZZARDS.
Defeat 100 BUNNIES.
Defeat the CHICKEN? at the top of DINO'S DIG.
Complete ORANGE JOE's quest.
Get the LOL SWORD.
Commission ROCOCO.
Receive all FLOWERS in the hospital.
Reach the bad ending.
Reach the other ending.
Go to SEAN and KAREN's housewarming party.
Insert every song into GINO'S JUKEBOX.
Defeat the RECYCLEPATH.
Brush your teeth every day.
Read all the tombstones in the... dev room...
Take $20.00 from KEL's wardrobe.
Watch all movies in SWEETHEART'S "throne room".
Don't high-five KEL.
Lose to KIM and VANCE.
Reach the good ending.
Give FLOWERS to MARI.
Feed the STRAY CAT every day and sunset.
High-five KEL three times.
Defeat HUMPHREY.
Defeat SLIME GIRLS.
Pet all the creatures in MARINA's sector in HUMPHREY.
Have a ghost party.
Trade CLAMS for CLEMS.
Defeat UNBREAD TWINS.
Turn the valve to the right in RAIN TOWN.
Defeat PLUTO (EXPANDED).
Defeat MR. JAWSUM.
Throw away something.
Defeat the HOOLIGANS with PEPPER SPRAY.
Battle the "bees".
Defeat the PET ROCK champion.
Get a perfect score delivering PIZZA.
Quit in the middle of a part-time job.
Defeat SWEETHEART.
Perfectly train the SPROUT MOLE choir.
Kill the first SOUS CHEF.
Choose the WINTER MOLE.
Choose the FALL MOLE.
Choose the SUMMER MOLE.
Choose the SPRING MOLE.
Ruin Christmas.
Hold 99 TOFU.
Listen to MR. SCARETHROW's rant.
Go to sleep after a long day.
High-five KEL.
Complete the grammar worksheet correctly.
Complete the math worksheet correctly.
Complete all part-time jobs once.
Wake up in the morning.
Defeat KITE KID.
RELEASE ENERGY on your foes.
Defeat SPACE EX-BOYFRIEND.
Defeat DOWNLOAD WINDOW.
Make your way and talk to LONE MOLE.
Defeat THE EARTH.
Defeat ???.
Fly the BUTT CERTIFICATE in CATTAIL FIELD.
Gain BREAD using BREAD SLICE.
Pet a dog.
Water a plant back to life in BASIL's garden.
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