Here is the full list of all 22 Megapolis achievements.
Win 12 sandbox scenarios.
Earn all the gold stars.
Complete the entire campaign.
Earn all the trophies.
Build a zone with 5,000 residents.
Earn $100,000,000.
Earn 12 trophies.
Order 150,000 units of material.
Earn 12 gold stars.
Reach 25 total happiness.
Upgrade 300 buildings.
Buy 20 licenses.
Build 250 buildings.
Demolish 100 buildings.
Train 100 workers.
Clear 75 plots.
Upgrade 100 buildings.
Build 75 buildings.
Demolish 25 buildings.
Upgrade 25 buildings.
Demolish 5 buildings.
Build 10 buildings.