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