Here is the full list of all 97 Just King achievements.
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.
Reach 200% Damage and 4 Armor only with items on a hero.
Concentrate to use your full power.
Defeat the creature that stole the Throne of the Deep.
Pat the pettable ones.
Cause 666+ damage in a single hit.
Win a combat without taking damage.
Defeat the creature in the Mountain's Castle.
Play a song with your soul.
Gift of the high rank.
You must become a fighter!
Defeat the creature that oppresses Trumwood.
Upgrade one hero to lvl3.
A spear-sized baguette.
Win an Elite combat.
Win your first node combat.
Defeat the boss only buying Clerics and items.
Be defeated by nana on node 1.
You gonna need a lvl3 Cleric.
Get a MvP with Cleric lvl3.
Defeat the boss with at least 2 Captains at lv 3 each.
Equip an Captain lv3 with Forgotten Banner, Chaplain's Pauldron and Shattered Saber.
Running is sometimes a good option!
Give Enzo tools to free himself.
Reflect on your limitations.
Try to protect everyone without much success.
Get a rare seed.
Make a foolproof plan.
Gotta run fazt.
Be the center of attention.
Get fair pay for your work.
Show off your power!
Peace! Says the philosopher.
A helmet forged by great blacksmiths.
It's on fire!
Now you see it, now you don't!
Alleys too narrow to aim.
Perform a heroic move!
Reach 200% Haste and 300% Heal only with items on a hero.
Defeat a boss using at least two lv3 Frost Witches.
Defeat a boss using at least two lv3 Vikings.
Defeat a boss using at least two lv3 Deep Cultists.
Defeat a boss using at least two lv3 Sharkmancers.
Defeat a boss using only Frenzy heroes.
Defeat a boss using only Heavenly heroes.
Defeat a boss using only Shady Business heroes.
Defeat a boss using only Strategist heroes.
Defeat a boss using only Hot Hands heroes.
Defeat a boss using only Protagonist heroes.
Defeat a boss using only Cold heroes.
Defeat a boss using only Deep heroes.
Feed it.
You can't catch up with nature.
You need at least a PhD to blance magic and physics like that.
There is no quality material nowadays.
Ice is not always the answer for everything.
Use advanced hunting tactics.
Gift it with the hug of the great mother.
Slide very fast for a long distance.
Find an old missing tree.
Feed the green.
Defeat a boss using at least two lv3 Huntresses.
Defeat a boss using at least two lv3 Druids.
Defeat a boss using only Woodlander heroes.
Get hurt by using too much force.
Find a treasure that wants to be found.
Win a combat without dealing damage with heroes.
Reach 10 armor only with items on a hero.
Fight for a noble cause.
Get a potion in the middle of the festival.
Show some of your faith during a tense moment.
Get rid of something important.
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!