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.
Catch 160 fish.
Find 140 eggs.
Pick 45 herbs.
Hunt down 65 wild animals.
Make 25 sun solutions.
Destroy the Dark Lord.
Find 60 lost crates and barrels.
Find 12 treasures.
Own 5,000 gold coins.
Fight 12 battles.
Gather 15 barrels of algae.
Rest 50 times in a camp.
Gather 40 sacks of night flowers.
Have 350 fame.
Catch 80 fish.
Help two ghosts.
Heal five people.
Find 12 pearls.
Build or repair 10 structures.
Find father.
Learn an expert skill.
Find 25 crayfish.
Own 500 gold coins.
Find 30 lost crates and barrels.
Find 150 mushrooms.
Become a soldier.
Hunt down 25 wild animals.
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.