When Bomberman is dizzy, rotate the Analog-stick for a faster recovery.
To get the full power option, beat the game with 120 gold cards.
Beat Hard Mode with 120 gold cards in under three hours. I highly recommend that you have the Full Power option unlocked before you attempt this.
You'll start with a full Knight outfit you can wear in Battlemode. To get new Outfits search all the levels for hidden parts to the outfits. You can access the outfit at the spot where you save your game put Customize.
To access a sound test option, beat the game in Adventure mode at normal difficulty.
Collect all 100 Gold Cards and beat Altair again to access a completely new world (Rainbow Palace).
First beat the game with 100 Gold Cards, then finish the extra world by defeating Sirius. If you now go to the Options menu, you can view the credits without having to beat the game again.