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