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