Explode a blue balloon.
Explode a red balloon.
Complete the BARREL FACTORY stage.
Complete the LIMBO MAZE stage.
Complete the UNDERGROUND GARDEN stage.
Complete the WHITE LAND stage.
Complete the BOMB FIELD stage.
Complete the THIEF'S MINE stage.
Complete the DEVILAND PARK stage.
Complete the MONSTERS' CAVE stage.
Complete a BONUS LEVEL.