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