In order to unlock these achievements, one must first complete a specific task in the game.

Achievement	How to unlock
Advanced Warning	Upgrade your Watch Tower to Lv 5.
County Town	Expand your Population to 1,000.
Diplomacy	Join an Alliance.
Early Warning	Upgrade your Watch Tower to Lv 2.
Elite Army	Upgrade your Barracks to Lv 5.
Financial Genius	Increase Tax Revenue to 10,000.
Financial Talent	Increase Tax Revenue to 1,000.
Financial Wizard	Increase Tax Revenue to 40,000.
Gate Breaker	Train 100 Battering Rams.
Great Capital	Expand your Population to 40,000.
Great Ruler	Upgrade your Castle to Lv. 5.
Great Scholar	Upgrade your Alchemy Lab to Lv 5.
Infallible Warning	Upgrade your Watch Tower to Lv 10.
Invincible Army	Upgrade your Barracks to Lv 10.
Legendary Ruler	Upgrade your Castle to Lv. 10.
Legendary Scholar	Upgrade your Alchemy to Lv 10.
Master Farmer	Increase Food Production to 25,000.
Master Forester	Increase Wood Production to 25,000.
Master Mason	Increase Stone Production to 25,000.
Master Smith	Increase Ore Production to 25,000.
Professional Army	Upgrade your Barracks to Lv 2.
Respected Ruler	Update your Castle to Lv 2.
Respected Scholar	Upgrade your Alchemy Lab to Lv 2.
Round Table	Upgrade Knights' Hall to Lv 5.
Siege Master	Train 200 Catapults.
Small City	Expand your Population to 10,000.
Strong Defenses	Upgrade your Wall to Lv 2.
Stronger Defenses	Upgrade your Wall to Lv 5.
Strongest Defenses	Upgrade your Wall to Lv 10.
Tame the Land I	Defeat a Lv 2 Wilds or Plain.
Tame the Land II	Defeat a Lv 5 Wilds or Plain.
Tame the Land III	Defeat a Lv 10 Wilds or Plain.