This can be easily farmed on the first level as when you die you respawn and any stars you've already collected are still counted
. You jump with and grab with whilst pointing in a direction with the .
Once you load up the first level and follow the level through until you come to an area where you can climb down again, you will be brought to some dandelion looking floating seeds, you can grab onto the hanging piece of these and use them to travel up to a chest on a ledge to your right, inside this chest is a star, once you have collect the star you can jump to your right again onto some thorns until you die. Once you respawn you will be next to the area with the dandelions, repeat this process until you get the achievement.
Here's a video to show you