Things You'll Need
Instructions
Beat Adventure Mode in less than 18 minutes and defeat Big Bowser in less than 1 minute in order to unlock the fight against Giga Bowser.
Jump to avoid Giga Bowser's fire breath---you will know he is about to use it when he rears back his head---and be aware that his special offensive moves, Bowser Bombs and Koopa Klaws, are particularly dangerous.
Use motion-sensor bombs whenever you can and toss any items you don't find useful off the stage because Giga Bowser will use them if given the opportunity.
Attack Giga Bowser until he has received about 300 percent damage, allowing you to KO him. For defeating Giga Bowser, you will receive 30,000 points and a trophy.