Here is the full list of all 17 Little Briar Rose achievements.
Finish the game with the first prince.
Obtain a Perfect result in the sewing game.
Listen to all of Navi's advices.
Don't use hints in the second maze puzzle.
Don't use hints in the third maze puzzle.
Don't use hints in the fourth maze puzzle.
Finish the game once.
Finish the game with the second prince (Stephen).
Kiss the Princess with the wrong prince.
Help the Spriggan date the Fairy.
Collect every item.
Obtain a Perfect result in the cooking game.
Die seven times.
Capture the Golden Fish.
Don't use hints in the first maze puzzle.
Choose the right decoration for the Gnomes' house.
Die three times in the same puzzle.