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