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