This requires you to buy all managers on earth while only having bought Lemonade Stands. You must have 0 of every other building (on Earth). If you have enough Angels, this isn't so hard.
I unlocked it with 200 untrigintillion angels by doing this:
- buy as many Lemonade Stands as you can
- buy the Lemonade Stand manager
- buy all available upgrades (you can use quik buy here)
- buy only the angel upgrades pertaining 'something profit x3' and such, DO NOT use quikbuy and DO NOT buy 'building +25' and such angel upgrades
- buy the rest of the managers.
Tips for gaining cash & angels fast:
How to gain money and angels really fast.