Here is the full list of all 27 Beatbuddy: On Tour achievements.
Get through the tutorial
Beat the game on normal difficulty
Beat the game on hard difficulty
Beat the game on super hard difficulty
Get 15 Stars
Get 130 Stars
Get 190 Stars
Get 250 Stars
Get All Stars
Collect 100 beatcoins
Collect 1000 beatcoins
Place 10 pearls in shells
Place 100 pearls in shells
Mix music in the freetsyle mode for 5 minutes
Mix music in the freetsyle mode for 20 minutes
Make Beatbuddy dance 100 times
Make Beatbuddy dance 1000 times
Fail a level
Fail three levels
Touch 10 red dancers
Touch 100 red dancers
Activate 50 music instruments
Activate 500 music instruments
Activate 5000 music instruments
Unlock 5 music instruments
Unlock 15 music instruments
Unlock 30 music instruments