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