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