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