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