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