Here is the full list of all 84 OMORI achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Unlock all achievements. Thank you for playing OMORI.
Complete the FOE FACTS! journal.
Recover at all of MARI's picnics.
Visit all mirrors.
Receive all FLOWERS in the hospital.
Insert every song into GINO'S JUKEBOX.
Feed the STRAY CAT every day and sunset.
Go to SEAN and KAREN's housewarming party.
Defeat the RECYCLEPATH.
Take $20.00 from KEL's wardrobe.
Battle the "bees".
Don't high-five KEL.
Defeat the PET ROCK champion.
Complete the grammar worksheet correctly.
Complete the math worksheet correctly.
Lose to KIM and VANCE.
Get a perfect score delivering PIZZA.
Quit in the middle of a part-time job.
Defeat PERFECTHEART.
Commission all of GATOR GUY's statues.
Commission all of ROCOCO's art.
Get all rewards from the RECYCLING MACHINE.
Defeat 100 BUNNIES.
Defeat every SOMETHING at the bottom of the LOST LIBRARY.
Defeat 100 SQUIZZARDS.
Pet all the creatures in MARINA's sector in HUMPHREY.
Defeat MUTANTHEART.
Beat the BOSS RUSH.
Defeat ROBOHEART.
Defeat SPACE EX-HUSBAND.
Look through all telescopes.
Let the plastic fish finish its song.
Defeat PLUTO and THE EARTH.
Trade CLAMS for CLEMS.
Have a ghost party.
Defeat the CHICKEN? at the top of DINO'S DIG.
Complete ORANGE JOE's quest.
Defeat UNBREAD TWINS.
Turn the valve to the right in RAIN TOWN.
Hold 99 TOFU.
Take the KEEPER OF THE CASTLE's power.
Watch all movies in SWEETHEART'S "throne room".
Commission ROCOCO.
Get the LOL SWORD.
Gain BREAD using BREAD SLICE.
Throw away something.
Reach the bad ending.
Reach the good ending.
Give FLOWERS to MARI.
High-five KEL three times.
Brush your teeth every day.
Pet a dog.
Defeat the HOOLIGANS with PEPPER SPRAY.
Choose the SPRING MOLE.
Choose the SUMMER MOLE.
Choose the FALL MOLE.
High-five KEL.
Complete all part-time jobs once.
Enter code: haveadollariguess at www.omocat-shop.com for $1.00 off.
Reach the other ending.
Get the FLOWER CROWN from BASIL.
Complete your TO-DO LIST.
Read all the tombstones in the... dev room...
Defeat KITE KID.
Defeat HUMPHREY.
Defeat SLIME GIRLS.
Defeat PLUTO (EXPANDED).
Defeat MR. JAWSUM.
Defeat SWEETHEART.
Perfectly train the SPROUT MOLE choir.
Kill the first SOUS CHEF.
Ruin Christmas.
Choose the WINTER MOLE.
Go to sleep after a long day.
Wake up in the morning.
Defeat SPACE EX-BOYFRIEND.
RELEASE ENERGY on your foes.
Defeat DOWNLOAD WINDOW.
Listen to MR. SCARETHROW's rant.
Make your way and talk to LONE MOLE.
Defeat THE EARTH.
Defeat ???.
Fly the BUTT CERTIFICATE in CATTAIL FIELD.
Water a plant back to life in BASIL's garden.