- There is a small glitch in the game that will grant you invincibility for a few moments if done correctly. After one of the boss fights, Uka Uka, there will be a short cut scene where Uka proclaims, "No, that's my job!" in response to being defeated. Right as he says those words, press the blue X button. After which, you'll be able to enjoy a few moments of invincibility.
- To unlock a hidden FMV sequence, or 3D movie in the game, simply beat it to 100% completion. To accomplish this, you must defeat every level, every boss, collect every crystal and get all the gems of every color within every level.
- Little extra unlockable modes are sprinkled throughout the game and are awarded upon the collection of gems; there are six gems of varying colors scattered throughout each level. Once you collect a certain colored gem in a level, you'll unlock a series of extras in that level that can be accessed from the Extras sub-menu on the main menu. Finding the blue gem unlocks a boss gallery, the purple gem unlocks concept art, the green gem unlocks an enemy gallery, the red gem unlocks a storyboard, the yellow gem unlocks what is known as an unseen gallery (omitted material from the level) and the clear gem unlocks a hidden video.











