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