You need to unlcok ALL bakugan then wait for Marduk to have the final question mark. You will need to battle him without giving up any gate cards. -Battle Ax Vladitor
Well, there is a special toys R us version of the game which gives you the two version exclusive bakugan Ravenoid and Manion (that's why you can get there gate cards in the normal game too). But you...
Try adding a G-power swap ability card in your ability card deck. Select it, and try to stay so if the battle was over you would lose, but you wont. Don't activate it until the last second of the...