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