Here is the full list of all 57 Hero of the Kingdom III achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Achieve 140 fame.
Defeat Earthquaker.
Kill 300 monsters.
Get the lockpicking skill to 100.
Get the combat skill to 100.
Make 600 various potions.
Have 5,000 gold coins.
Make 80 weapons or shields.
Get the smithing skill to 100.
Find 400 eggs.
Cook 8,000 food.
Pick 60 locks.
Visit the Azure Valley.
Destroy all of the orc camps.
Get the mining skill to 100.
Mine 50 pieces of silver ore.
Have at least 1,000 strength.
Find 24 pearls.
Find 120 lost crates and barrels.
Find 800 mushrooms.
Pick 300 flowers.
Hunt down 150 wild animals.
Mine 50 pieces of iron ore.
Get the cooking skill to 100.
Get the alchemy skill to 100.
Make 100 healing potions.
Make 10 swords.
Pick 15 locks.
Get the herbalism skill to 100.
Achieve 70 fame.
Learn the mining skill.
Learn the smithing skill.
Visit the Gray Valley.
Hunt down 20 foxes.
Find some treasure.
Get the archery skill to 100.
Gather 100 berries.
Learn the lockpicking skill.
Have 1,000 gold coins.
Kill 150 monsters.
Get the fishing skill to 100.
Cook 2,000 food.
Learn the alchemy skill.
Learn the herbalism skill.
Save the mayor of the Yellow Valley.
Catch 100 fish.
Catch a golden fish.
Find 30 lost crates and barrels.
Find 100 eggs.
Visit the Yellow Valley.
Find 6 pearls.
Find 200 mushrooms.
Kill 50 monsters.
Have at least 100 strength.
Hunt down 20 rabbits.
Learn the fishing skill.
Learn the cooking skill.