Here is the full list of all 17 Little Briar Rose achievements.
Finish the game with the first prince.
Listen to all of Navi's advices.
Don't use hints in the fourth maze puzzle.
Don't use hints in the third maze puzzle.
Don't use hints in the second maze puzzle.
Don't use hints in the first 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.
Die seven times.
Die three times in the same puzzle.
Obtain a Perfect result in the cooking game.
Obtain a Perfect result in the sewing game.
Capture the Golden Fish.
Choose the right decoration for the Gnomes' house.