Here is the full list of all 15 Music Killer achievements.
Slay 100 dragons.
Expel 100 ghosts.
Destroy 100 UFOs.
Disassemble 100 neurobots.
Terminate 100 spiders.
Win cooperative match.
Do a stomp jump.
Collect 5,000 crystals.
Win, but don't lose any health.
Win, but don't hurt anything.
Play 10 matches.
Crush 1,000 skulls.
Do 100 combo.
Win.
Lose.