Nervous Brickdown Cheats - Nintendo DS
Primary Collection of Cheats
Unlock Sound Test
To unlock a sound test for each of the 10 worlds, obtain a medal on all of the levels in that world. Medal objectives for all normal stages are displayed before beginning play in each world; to obtain a boss medal, you must defeat it without losing a life.
Once all medals are obtained you can listen to the normal and boss stage music in the Bonus menu.