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.
Order 150,000 units of material.
Upgrade 300 buildings.
Buy 20 licenses.
Build 250 buildings.
Earn 12 trophies.
Reach 25 total happiness.
Demolish 100 buildings.
Earn 12 gold stars.
Upgrade 100 buildings.
Clear 75 plots.
Train 100 workers.
Upgrade 25 buildings.
Demolish 25 buildings.
Build 75 buildings.
Build 10 buildings.
Demolish 5 buildings.