Here is the full list of all 65 AdvertCity achievements.
Start a new game while you already have one in progress
Go bankrupt
Hire 100 employees
Start the game with a seed other than the default
Read 10 cybersite descriptions
Start the game on Windows
Run the game from Linux or SteamOS.
Hack a megacorporation
Try to hack the hacker megacorp
Load a saved game
Start the game on OS X
Buy a building
Move your headquarters
Sell a building
Pay off your bank loan completely
Take out a loan over 1000XDG
Take over any megacorp
Take over Domestic Edible Deliveries
Take over The Narcotics Cooperative
Take over Desperate Designers
Take over Posters of Interest
Take over Loudmouth Frog
Take over $MUSIC$
Take over Friendface
Take over Secure Storage Syndicate
Take over Personbox
Take over The Construct
Take over Happy Banking Co
Take over Blimpy Bros
Take over 256 Shades of Hats
Take over Fullbright
Take over The Transhumanic League
Take over all the megacorps
Unlock all flyer advertising technologies
Unlock all poster advertising technologies
Unlock all blimp advertising technologies
Unlock all text advertising technologies
Unlock all image advertising technologies
Unlock all meatspace advertising technologies
Unlock all cyberspace advertising technologies
Unlock all advertising technologies
Fire all employees from a building, leaving it empty
Hire as many employees as will fit in a building, bringing it to its maximum capacity
Fire 100 employees
Run the game with a virtual reality headset
Unlock all billboard advertising technologies
Hire 1,000 employees
Fire 1,000 employees
Hire 10,000 employees
Fire 10,000 employees
Hire 100,000 employees
Fire 100,000 employees
Make over 1,000,000XDG
Make over 1,000,000,000XDG
Make over 1,000,000,000,000XDG
Move your headquarters to a building over 800m high
Move your headquarters to a remote rural cottage
Complete the game with zero employees
Complete the game without ever offending any megacorp
Read 10 building descriptions
Open the description of a building on a street whose name matches your Steam account
Have a negative reputation with all megacorps at once
Have a reputation below -10 with all megacorps at once
Have a reputation over +10 with all megacorps at once