Select Single Player > Campaign
Play through a couple of the levels until you unlock column 'F' on the levels.
Level 26: Breakthrough is a 'collect' style level with 'power up rate' preset at high.
There are two types of token in this level. The token that counts towards the achievement in this level is the purple circle with the rectangle inside a dotted square. (The blue token counts towards level completion, but not for this achievement).
It is possible to get 10 - 20 power ups in one play on this level so your progress bar will climb very quickly.
Once you hit 300 the achievement will unlock.