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