Every time you collect those blue orb things (mojo), they count up in the top of your screen in a blue circle. Once that circle is filled, you get a new ability or an upgrade to one you already have. Once you get all the upgrades for all the abilities, this will pop up.
Get the blue orbs by smashing plants crates, enemies, mostly everything, and you can always replay a level to get more mojo to your meter.
Also it should be known that you need 1.2 million points worth of mojo to get the achievement. :)