Full list of all 30 Imperia Online (Windows) achievements worth 400 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 20 achievements worth 200 Gamerscore, and there is 1 DLC pack containing 10 achievements worth 200 Gamerscore.
Reach 10 000 net points
Enter into a dynastic marriage
Reach 18 000 population in the entire empire
Send from Caravan Station at least 5000 gold, all at once, to an ally
Complete 10 quests
Build 2 Archery Barracks in a holding
Build level 1 of Town square
Research Banking 1
Research Range Attack 3
Hire and mobilize 50 spies
Build University 3
Get 2 rewards from the casket in Temple
Make an alliance or join one
Research Espionage 3
Write a message to a player
Research Medicine 1
Have 6 great people in your empire
Complete 5 quests
Reach 50 000 net points
Reach 100 000 net points
Research Banking 5 and take a deposit with small interest
Build Fortress 5
Reach general’s level 10
Hire 250 Supply wagons
Take control over 2 provinces
Reach governor’s level 10
Reach Honor 20
Sell 1000 wood
Plunder 20000 resource in attacks on independent cities
Found a trading post