Fusion Dots

I'm not sure if the pre-level purchases are random or not.

The earliest I could buy this booster was level 18;

-Select the level.
-There will be an icon which looks the same as the achievement (dot with wings).
-Costs 10 diamonds, purchase and click Start.
-When in level, at the top left of the screen you will see that you will have 2x wings power up.
-Use them both and the achievement will pop.

You only have to buy the power up once to pop this achievement.

Infinite diamonds to make this a WHOLE lot easier

All credit to lufffffy

-Turn on plane mode
-desactivate auto date
-chose a false date ( ex: 01/01/15)
-open the Game, You Will have 10 new diamonds
-close the Game
-change the date (02/01/2015) and repeat the process
Don't forget to reactivate auto date and turn off plane mode before playing.
The Game is still difficult but it helps a lot!