Use the slow-mo ability before the chameleon spits its fireballs, then hit it with a punch to scrap it. Then, use it before climbing the leaves on the water spouts ahead. Finally, keep slow-mo active ...
When you get off the Dual Speeder, you'll reunite with the LocoRoco bot you rescued at the end of the Mecha Leon boss fight. Together, you'll create a new form for Astro! This new form is controlled ...