Here is the full list of all 10 I Won't Forget Hue achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Reach the Painting Room in 5 minutes
Reach the Painting Room without Dying
Reach the Painting Room
Look through the Magenta Lenses
Acquire all hidden Painting Pieces
Look through the Yellow Lenses
Play the piano
Acquire your next Painting Piece
Look through the Cyan Lenses