Naughty Nautical Neighbors achievement in SpongeBob's Truth or Square

If you still have no clue: After you are muscular you hammer the fairground bell which opens a spiral route to a platform where you can jump on the jellyfish you release from glass vats. You use the jellyfish to reach the far platform that has the Tiki Challenge machine - you press BACK to activate it and you have to smash 10 Flying Dutchmen (green lantern head platforms).
I never activated one before because I thought it was a tutorial thing!