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