Here is the full list of all 10 The Unfinished Swan achievements.
Launch a blueprint box 30 meters high.
Launch a blueprint box 15 meters high.
Release all balloons.
Reveal every storybook page in the game.
Look at the sleeping King.
Finish the King's Dream chapter.
Finish the Nighttime chapter.
Finish the Unfinished Empire chapter.
Reach the Watchtower without throwing more than 3 balls.
Finish the Garden chapter.