Boss Battle Mode
Complete the game after collecting every crystal to receive 100%, and you will unlock the boss battle mode.
Difficult shard
The shard in the world 3 beach course, the thrid shard is very hard to get.Get leaf and rock power and once you enter the cave-like place, break the wall and get the one up. Change to chipmunk rock animal and go near the wall and press a in a pattern. You should get that shard.
Elements
These are ALL the combinations Kirby can do:
Fire+fire= firebird
Fire+ice= melting ice
Fire+spark= head fire
Fire+cutter= flame sword
Fire+spike= fire bow
Fire+bomb= fireworks
Fire+rock= hot rock blast
Ice+ice= snowball roll
Ice+fire= melting ice
Ice+spark=refridgerator
Ice+cutter= ice skates
Ice+spike= pointy ice tree
Ice+bomb= bomb snowman
Ice+rock= sliding ice rock
Spark+spark= giant electric
Spark+fire= head fire
Spark+ice= refridgerator
Spark+cutter= electric stick
Spark+spike= electric rod
Spark+bomb= light bulb
Spark+rock= electric controled rock
Cutter+cutter= giant boomerang
Cutter+fire= flame sword
Cutter+ice= ice skates
Cutter+spark= electric stick
Cutter+spike= giant pointy toothbrushes
Cutter+bomb= tiny throwing bombs
Cutter+rock= animal rock form
Spike+spike= pointy objects
Spike+fire= fire bow
Spike+ice= pointy ice tree
Spike+cutter= giant pointy toothbrushes
Spike+bomb= spike ball
Spike+rock= driller
Bomb+bomb= rocket launcher
Bomb+fire= fireworks
Bomb+ice= bomb snowman
Bomb+spark= lightbulb
Bomb+cutter= tiny throwing bombs
Bomb+spike=spikeball
Bomb+rock= dynamite
Rock+rock= giant rock
Rock+fire= hot rock blast
Rock+ice= sliding ice rock
Rock+spark= electric controled rock
Rock+cutter= animal rock form
Rock+spike= driller
Rock+bomb= dynamite
Final Final Boss
Yes, we know that earning 100% earns you boss battle mode, but there is a small detail. You must fight a major big bad guy before you can acces Boss battle Mode. He is on the secret level, Dark Star which you unlock by getting 100%.
Anyway, the guy does not have a name that i know, so i call him Final Final Boss. To defeat Final Final Boss, ripple the fairy comes and gives you a sweet gun made out of the crystal shards.The only strategy is this one. Tab b button constantly.
Final Final Boss will counter your shots until he fires his attack. Shoot him while he shoots at you and he will bleed a little around his eye. After a few times that his eye bleeds, he rolls over and exposes his Halo. You must shoot that halo. Shoot it until it turns colors and gets smaller and dissapears.
Final Final Boss will then kneel over and produce a Cactus-like tail thingy. Shoot the tail, and it will flash and Final Final Boss will be damaged.
Note that his tail is the only way to hurt him, the rest is just to stun him properly. Keep up the tail a lot, and he will eventually die, and you will be rewarded with the Perfect Ending Cinema Scene.
Movie viewer mode
Complete the game after collecting every crystal to receive 100%, and you will unlock the movie viewer mode.
Sound Test
Complete the game one time to unlock the sound test option.