Here is the full list of all 36 Kingdom Two Crowns Playtest achievements.
Recruited eight archers
You got free walls.
You started your camp.
You hunted 40 or more critters.
You didn't kill anything.
You had more gold than you could carry.
You cleared an acre of land.
You forged a new Crown
You held a Gem
You destroyed a portal.
Sail away before day 6!
Ride 4 different steeds on the same land
Put 4 hermits on the same boat
I have 20 max-level towers on a single land
Escape the cave with your crown in tact
Set fire to 20 greed with one flame barrel
Revive a Land after 200 days of decay
Have lighthouses on all 5 lands
Clear all trees from a single land.
Beat a portal with a squire
Defeat the Greed on one land
Defeat the Greed on two lands
Defeat the Greed on three lands
Defeat the Greed on four lands
Defeat the Greed on all five lands
Defeat the Greed from all five lands in a single reign
Retrieve your crown 300 times
Sail to another land in Coop 30 times
Overcome the Greed on Skull Island
Lose your crown, but not your legacy.
Summoned the four monarchs to the land of the dead.
Ride the Gamigin.
Recruit a Cat
Convert a Beggar Camp into a Citizen House
Defeat the Greed on all 6 Lands
Unlock all Items of Power (Solve All Puzzles)