Hard difficulty:
Complete the game with 100% item completion to unlock the Hard difficulty setting.
Upgraded map:
Complete the game. Return to the Bottle Ship after the credits. The locations of all items will now appear on the map, and you can see your percentage of collected items.
Theater:
Complete the game to unlock the Theater. Unlock the following chapters in the Theater by performing the corresponding tasks:
CHAPTERS – HOW TO UNLOCK
Chapters 1 to 26 – Defeat the final Story mode Boss.
Chapters 27 to 30 – Successfully complete the game.
Gallery:
Successfully complete the game to unlock the Gallery. Unlock the following pages in the gallery by performing the corresponding tasks:
PAGES – HOW TO UNLOCK
Pages 1 to 4 – Defeat the final Story mode Boss.
Pages 5 to 7 – Complete the game.
Page 8 – Complete the game with 100% items.
Alternate title screen music:
To unlock alternate title screen music, defeat Phantoon and unlock the hidden ending.
Morph Ball overload attack:
Charge your Beam and turn into the Morph Ball before releasing it. You will drop five normal bombs at the same time.
Quick Charged Beam attack:
Charge while in Morph Ball form. You will be able to immediately shoot a Charged Beam when you turn back into Suit form.