Here is the full list of all 32 The Metronomicon: Slay The Dance Floor achievements.
Survive every song in Story Mode.
Save the world of Koras from Dancemageddon.
Unlock Sara's laboratory.
Decompile a fearsome Dance-o-bot.
End the dancing of a great Candy Dragon.
Make five arena challenges your chump
Conquer one challenge in the school arena.
Succeed in beating five sidequests.
Dethrone the Wraith King in the Haunted Kingdom.
Survive a story song without healing any party member.
Survive your first 10 songs in Story Mode.
Destroy the Speyeder of the Wild Forest.
Perform a perfect meteor attack counter.
Perform a perfect Solo-Lane Team Attack.
Attain a 300 note streak.
Unlock your first bonus song.
Succeed in your first story sidequest.
Perform your first upgrade to the school.
Attain a 100 note streak.
Beat the final challenge's omega boss.
Defeat every arena challenge.
Defeat every arena challenge on hard.
Survive every song in Story Mode on Hard.
Purchase every ultimate weapon.
Succeed in every single sidequest.
Survive a story song without killing an enemy.
Apply six buffs to one hero at the same time.
Deal at least 5000 hp damage in one strike as Gwen.
Kill five enemies in a row with a single attack.
Beat a fifty song playlist without ever pausing.