Here is the full list of all 80 Coromon achievements.
The base game contains 76 achievements, and there is 1 DLC pack containing 4 achievements.
Defeat Illuginn.
Trigger a Heatwave in a battle.
Defeat Voltgar.
Trigger a Sandstorm in a battle.
Defeat the mysterious intruder.
Trigger Twilight in a battle.
Give a Fruit to a Coromon.
Redeem a Shop coupon.
Complete 5 side quests.
Use a Skill Flash on one of your Coromon.
Trigger Rain in a battle.
Evolve a Coromon.
Pick your starter.
Read your mother’s diary.
Trigger Snow in a battle.
Potentiflate a Coromon.
Traitformate a Coromon.
Resetinate a Coromon.
Have 6 Coromon of different types in your Squad.
Have 6 Coromon of the same species in your Squad.
Dig up a Hold item.
Have all Squad members in the same Spinner type.
Defeat Sart.
Win the Mirror Challenge.
Defeat Hozai.
Join the Alavi festivities.
Defeat Vørst.
Defeat Chalchiu.
Reach Researcher Level 50.
Reach Researcher Level 100.
Complete the story without letting one of your Coromon faint.
Catch every Coromon species.
Complete the game on Easy or higher.
Complete the game on Normal or higher.
Complete the game on Hard or higher.
Complete the game on Insane.
Collect the hidden bunny ears.
Collect the hidden santa outfit.
Collect the well-hidden sneak outfit.
Cross the bridge in the Scorching Sands safely.
Plant fruits, everywhere!
Get a score of 1000 in Swurmy Rush.
Get a score of 500 in Flappy Swurmy.
Watch the credits.
Open all doors in a town.
Give your starter to Jerome.
Unlock the electro magnetic lock in the R&D lab.
Brew a Potent Scent.
Evolve a Squidly before level 37.
Evolve a Purrgy before level 30.
Evolve a Swurmy before level 14.
Evolve a Slitherpin before level 25.
Evolve a Lunarwulf before level 39.
Get some free cakes.
Pet a Swurmy into madness.
Catch a Toruga where the last track ends.
Catch a Nibblegar in the painter's cave.
Catch a Cubzero on the highest mountain.
And I still get service.
Prove you’re weatherproof.
What’s up boss?
This sauna is too much.
Time for a new look! Who needs a barber?
Spend your last penny in a shop.
Spend less than 50 gold on a purchase in a shop.
Create a crop circle.
Try out the randomizer mode.
Earn 5000 Gold from Gems.
Reach level 99 with a Coromon.
Complete the Throwing Arm training.
Complete the Haggle training.
Find 150 Hidden items.
Defeat 60 trainers.
Have three different Coromon of the same family in your Squad.
Have six Potent Squad members.
Have a Purrgy and a Houndos in your Squad
Find the cave within the cave within the cave.
Devolve a Coromon.
Keep a Coromon from evolving.
Keep a Coromon from evolving twice.