Here is the full list of all 97 Just King achievements.
Defeat the gods without ever gaining any Red or Blue Trophies in a run
Swat the one that bit you.
Defend your thesis!
Defeat the Lightning Party God with max Blue Trophies.
Say prayers for each of the forgotten ones at the shrine.
Remember your kelp roots.
Defeat a boss using at least two lv3 Medusas.
Defeat a boss using at least two lv3 Cyclopes.
Defeat a boss using only Mythic heroes.
Defeat the coliseum rulers
Defeat the Undead War God with max Red Trophies.
Find the right weapon to defeat your foes.
Participate in the Dreekmocatic system.
Grow every kind of Krasis to its maximum potential
What best adapts to changes.
Create a whirlwind of jaws
Sculpt faster than sound
You must become a fighter!
Ice is not always the answer for everything.
Feed it.
Make a foolproof plan.
Be yourself.
Get rid of something important.
Perform a heroic move!
Fight for a noble cause.
You can't catch up with nature.
A spear-sized baguette.
Reach 10 armor only with items on a hero.
Gotta run fazt.
Peace! Says the philosopher.
Feed the green.
Win a combat without dealing damage with heroes.
Running is sometimes a good option!
A helmet forged by great blacksmiths.
Get a potion in the middle of the festival.
Concentrate to use your full power.
Get in touch with a distant relative.
Defeat a boss using only Shady Business heroes.
Get hurt by using too much force.
Guarantee the party's security.
Get fair pay for your work.
Defeat a boss using only Strategist heroes.
Show some of your faith during a tense moment.
It's on fire!
Defeat a boss using only Hot Hands heroes.
Reach 200% Haste and 300% Heal only with items on a hero.
Alleys too narrow to aim.
Defeat a boss using at least two lv3 Ronins.
Defeat the Shadow King with King.
Find a treasure that wants to be found.
Defeat a boss using at least two lv3 Deep Cultists.
Defeat a boss using at least two lv3 Sharkmancers.
Reach 200% Damage and 4 Armor only with items on a hero.
Slide very fast for a long distance.
Use advanced hunting tactics.
Defeat a boss using at least two lv3 Druids.
Gift of the high rank.
Now you see it, now you don't!
Defeat a boss using at least two lv3 Huntresses.
Defeat a boss using at least two lv3 Frost Witches.
Defeat a boss using at least two lv3 Vikings.
Cause 666+ damage in a single hit.
Equip an Captain lv3 with Forgotten Banner, Chaplain's Pauldron and Shattered Saber.
Show off your power!
Defeat the boss with at least 2 Captains at lv 3 each.
Get a rare seed.
You gonna need a lvl3 Cleric.
Impress them with your "luck".
Be defeated by nana on node 1.
Defeat the boss only buying Clerics and items.
Defeat a boss using only Heavenly heroes.
Get a MvP with Cleric lvl3.
Try to protect everyone without much success.
Defeat a boss using only Cold heroes.
There is no quality material nowadays.
You need at least a PhD to blance magic and physics like that.
Defeat a boss using only Woodlander heroes.
Find an old missing tree.
Win a combat without taking damage.
Defeat a boss using only Deep heroes.
Be the center of attention.
Gift it with the hug of the great mother.
Defeat a boss using at least two lv3 Onis.
Defeat a boss using only Yokai heroes.
Defeat the creature controlling the Bloodmoon.
Defeat the creature that stole the Throne of the Deep.
Upgrade one hero to lvl3.
Defeat a boss using only Protagonist heroes.
Defeat the creature in the Mountain's Castle.
Give Enzo tools to free himself.
Defeat a boss using only Frenzy heroes.
Reflect on your limitations.
Pat the pettable ones.
Play a song with your soul.
Defeat the creature that oppresses Trumwood.
Win an Elite combat.
Win your first node combat.