Here is the full list of all 17 Dance Magic achievements.
Complete one Tournament.
Win for the first time in Dance battle.
Stun your opponent and defeat him until the stun is over.
Pass any track for the first time on any difficulty.
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.
Fill your Combo to level 10 and deal damage using Rage.
Defeat an online opponent in Dance battle on the track with BPM above 180.
Defeat an AI opponent on maximum difficulty using custom music.
Perform 100 Specials.
Gain 999 999 money.
Complete the Tournament for all characters.
Buy for game currency everything that is sold.