Here is the full list of all 50 Grand Ages: Medieval achievements.
You have amassed 50,000,000 gold.
You have plundered 50 traders.
You have recruited 100 troops in the game.
Recruited a troop of knights
Out of all your competitors, you founded the most towns upon reaching the rank of
Out of all your competitors, you built the most businesses upon reaching the rank of
Out of all your competitors, you had the largest town or city upon reaching the rank of
12 towns founded
You have built your first ship
5 towns taken over by diplomatic means
Campaign: You have completed the campaign
You have eliminated a competitor.
You have celebrated your first festival.
A town has reached 15,000 inhabitants
5 towns taken over by military means
You have slain 5 predators.
You have 50 units of military troops under your command
6 towns taken over
You have plundered 10 traders.
Campaign: Barnas Goes Nuts
You have built 10 defense towers.
4 towns taken over
You have declared war.
You have built 10,000 km of roads.
8 towns founded
2 towns taken over
You have unlocked an entire tree in the development diagram.
You have amassed 5,000,000 gold.
A town has reached 8,000 inhabitants
You have unlocked all commodities.
You have built 500 businesses.
4 towns founded
You have built 200 businesses.
Campaign: In bed with Eudokia
You have maximized the experience of a military troop.
A town has reached 3,000 inhabitants
You have discovered 10 Adventure Sites.
You have discovered 50 Adventure Sites.
You have built 1,000 km of roads.
One of your towns or cities has achieved the maximum level of prosperity.
You have built 50 businesses.
You have traded 1,000,000 barrels of commodities.
You have traded 10,000 barrels of commodities.
You have entered into your first trade agreement.
You have destroyed 5 bandit camps.
Finished first multiplayer game
Won first multiplayer game
Handed goods over to a fellow player
Snuffed out a fellow player's troop
Took over a fellow player's town