Here is the full list of all 17 Dance Magic achievements.
Gain 999 999 money.
Collect 300 secret notes.
Buy for game currency everything that is sold.
Earn rating S or higher at 20 music tracks on Hard difficulty in Freestyle.
Complete the Tournament for all characters.
Defeat an AI opponent on maximum difficulty using custom music.
Collect 30 secret notes.
Perform 100 Specials.
Fill your Combo to level 10 and deal damage using Rage.
Collect all arrows on Hard difficulty using ingame songs.
Earn rating M at any music track on Hard difficulty in Freestyle.
Complete one Tournament.
Stun your opponent and defeat him until the stun is over.
Win for the first time in Dance battle.
Pass any track for the first time on any difficulty.
Defeat an opponent in Freestyle online-multiplayer on Hard difficulty.
Defeat an online opponent in Dance battle on the track with BPM above 180.