Instructions
Go into the Jungle and take the path to the right. Two Beetleworx will appear. Knock them into the paint thinner river to defeat them easily. Continue on the path, across a bridge, and defeat the Spladoosh with your paint thinner.
Backtrack across the bridge. Thin the right wall you started at using the paint thinner and go through the secret passage.
Jump over to the platform to the left. Paint the bridge and go across it. Paint the two platforms at the end of the bridge. Keep heading to the far end of the island and defeat the Spladoosh. The Robot Pirate will appear.
Thin out the Pirate Robot's shell completely using your paint thinner so his inner working will be exposed. After he performs his spin attack, he will fall over for a couple seconds, revealing a green gemstone. Attack the green stone while the Robot is vulnerable; do this three times to defeat the Pirate Robot.