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