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