Here is the full list of all 50 Hearthlands achievements.
Kill an elemental.
Complete the tutorial.
Make your troops turn on you by not paying the upkeep.
Watch your city burn.
Defend your city against the dragon.
Kill the dragon and destroy his lair.
Defend your city against the undead army.
Destroy the evil fortress.
Defend your city against goblins.
Destroy the goblin stronghold.
Defend your city against invaders.
Destroy the goblin village. Poor bastards.
Conquer a rival city.
Have 12 vassals.
Have 500000 coins.
Have 5000 population.
Have 10000 population.
Have 20000 population.
Destroy a graveyard.
Have 16 full squads before the end of year 20.
Have 50 technologies researched before the end of year 25.
Have 10000 fame.
Have one full squad of each unit type.
Kill a troll.
Kill a warlock.
Intercept 25 goblin thieves or burglars in one game.
Become someone's vassal.
Have 50 houses at maximum level before the end of year 10.
Play until year 100.
As Westerners kill 100 enemies using archers in one game.
As Westerners produce 5000 units of food in one year.
As Westerners collect 250000 coins in taxes in one year.
As Easterners kill 50 mounted units using spearmen in one game.
As Easterners produce 500 loads of cider in one year.
As Easterners have 10000 employed workers for 5 years.
As Southerners sell 250 loads of wine in one year.
As Southerners have 75 power.
As Southerners have 25 fountains.
As Northerners produce 150 loads of weapons and armor in one year.
As Northerners hunt down 100 animals in one year.
As Northerners kill 100 enemies in one year.
Have 2000 population and no plague for 10 years. Plague has to be enabled.
Have 5000 population for 10 years.
Have 1000 population and city reputation of 90+ for 20 years.
Sell 500 loads of goods in one year.
Have 12 rivals and have positive opinion with every one of them for 5 years.
Have 20 houses at maximum level for 5 years.
Produce 1000 loads of luxury resources in one year.
Have 12 rivals and fulfill all their requests (including tribute) for 10 years. Rivals can't be passive.
Have 1000 population and no deaths among civilians for 10 years.