Gettin' the rhythm - Obtain 1 star from any song.
Help is on the way! - Unlock two bonuses.
Easy Street - Obtain 32 casual stars.
Feelin' complete - Complete a song set.
Sextuple me - Get a 6x multiplier.
Nothing beats experience - Obtain 32 experienced stars.
It's a hard life - Obtain 34 hard stars.
Weapon of choice - Unlock all bonus types.
Playin' with power... - Unlock all destruction bonuses.
Unlock Nuke bonus - Unlock Nuke bonus (BOOM!!!).
WOW - Obtain 36 stars on all challenge songs.