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