Here is the full list of all 38 Hero of the Kingdom achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Find 300 mushrooms.
Find 60 lost crates and barrels.
Find 140 eggs.
Make 25 sun solutions.
Own 5,000 gold coins.
Find 12 pearls.
Gather 40 sacks of night flowers.
Pick 45 herbs.
Catch 160 fish.
Hunt down 65 wild animals.
Rest 50 times in a camp.
Destroy the Dark Lord.
Fight 12 battles.
Have 350 fame.
Find 12 treasures.
Help two ghosts.
Heal five people.
Learn an expert skill.
Find father.
Build or repair 10 structures.
Find 30 lost crates and barrels.
Find 25 crayfish.
Hunt down 25 wild animals.
Own 500 gold coins.
Find 150 mushrooms.
Gather 15 barrels of algae.
Catch 80 fish.
Become a soldier.
Have 100 fame.
Get a boat.
Learn an advanced skill.
Finish the water mill.
Learn three skills.
Get a weapon.
Make a barter.
Leave the home farm.
Saw 10 pieces of wood.
Get working tools.