Launch a blueprint box 15 metres high.
Launch a blueprint box 30 metres high.
Finish the King's Dream chapter.
Release all balloons.
Finish the Nighttime chapter.
Reveal every storybook page in the game.
Look at the sleeping King.
Finish the Unfinished Empire chapter.
Finish the Garden chapter.
Reach the Watchtower without throwing more than 3 balls.