Instructions
Go through the level and have Kirby collect any available beads.
Follow the bead meter at the top of the screen that keeps track of the number of beads you collect on each level. The meter has three medal levels; bronze, silver and gold. Make sure Kirby has collected enough beads to be in the gold level before reaching the boss.
Avoid getting hit too much when facing the boss at the end of the level. Every time Kirby gets hit, he loses some of the beads.
Defeat the boss. If the bead level is still at the gold level after the boss is beaten, a notification will appear on the screen saying "You found a patch." Wait for the point totals to accumulate and the new screen to load.
Press 1 to have Kirby throw the patch. This will cause a previously hidden door to appear.
Walk in the door to play the extra level.