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