Unlock Boss Rush Mode
Get 100% in a game.
100% success rate. 

Unlock Sound Test
Find the CD treasure to unlock the 'Sound Test' in the Treasure list. For more songs, find the Musical Scores.
100% success rate. 

Unlock Kirby Colours
Find the spray paint to unlock the 'Kirby Colours' option in the Treasure list.
100% success rate. 

Mataknight's Sword
Defeat Mataknight. Mataknight's sword will now appear in the hole in front of the Magic Mirror.
Submitted by ngyulan. 

Go to: Kirby and the Amazing Mirror Info Page | nGaming Home Page.