Full list of all 13 NiGHTS into dreams... achievements worth 400 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox 360.
Soft Museum cleared.
Witnessed the hatching of Mepian.
Mystic Forest cleared.
Spring Valley cleared.
Stick Canyon cleared.
Frozen Bell cleared.
Splash Garden cleared.
Clear Twin Seeds in either BRAND NEW DREAMS or SEGA SATURN DREAMS.
Clear all stages with a score of Rank A.
Show your supreme skill by achieving the highest Acrobat Time rating, "DREAMY".
Try to Paraloop all of Gillwing’s tail in one hit.
Try to guide the lost car in the Mystic Forest to the garage.
Clear Spring Valley (Christmas).