Here is the full list of all 36 Citizens: Far Lands achievements.
Have a single farm operate 25 wheat fields
Build 1000 Worker Houses
Build 30 houses on a beach, one after the other
Nice economy you got there. -1000 Gold is quite an achievement.
Have a single woodcutter producing 14 wood per turn
Have a single stonemason producing 12 stone per turn
Beat the campaign at easy difficulty
Beat the campaign at hard difficulty
Beat the campaign ar impossible difficulty
End Story I
End Story II
End Story III
Recruit a Swordsman
Recruit a Spearman
Recruit an Archer
Recruit a Knight
Have 50 Swordsmen
Have 50 Archers
Have 50 Spearmen
Have 10 Knights
Make a trade
Make 100 trades
Win 50 Battles
Exploit 500 Trees
Exploit 500 Stones
Exploit 500 Deer
Survive 20 invasions
Build a second Town Hall
Beat Olaf the Vengeful when he invades
Have 200 Citizens in one scenario
Have 50 Artisans in one scenario
Have 10 Aristocrats in one scenario
Unlock all buildings in menu shop
Get a coin from a floating chest
Find Wilson the Ball
Complete the Halloween Level