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