Here is the full list of all 22 Romopolis achievements.
Build a city with 2,000 residents.
Reach 25 total happiness.
Win 12 sandbox scenarios.
Earn all the medals.
Complete the entire campaign.
Earn all the trophies.
Earn 2,000,000 Dn.
Demolish 50 buildings.
Train 120 workers.
Earn 12 trophies.
Earn 12 medals.
Upgrade 300 buildings.
Buy 20 concessions.
Order 25,000 units of wood and stone.
Build 250 buildings.
Demolish 10 buildings.
Clear 50 plots.
Upgrade 100 buildings.
Build 75 buildings.
Upgrade 25 buildings.
Build 10 buildings.
Demolish 2 buildings.