Here is the full list of all 22 Townopolis achievements.
Earn $100,000,000.
Complete the entire campaign.
Earn all the trophies.
Earn all the gold stars.
Upgrade 300 buildings.
Order 300,000 units of material.
Buy 30 licenses.
Build a town with 1,000 residents.
Demolish 50 buildings.
Build 250 buildings.
Reach 100 total happiness.
Win 12 sandbox scenarios.
Earn 10 trophies.
Train 100 workers.
Earn 12 silver or gold stars.
Upgrade 100 buildings.
Demolish 10 buildings.
Clear 50 plots.
Build 75 buildings.
Demolish 2 buildings.
Upgrade 25 buildings.
Build 10 buildings.