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