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