I've got a strategy that I've posted in some other forums that might work…First battle will be on your gate card (Overhang), throw in low g darkus bakugan, then use combo battle and throw in another low g bakugan. After you win use Darkus Hex and send his two bakugan out of the game.Second battle play on his gate, use Triangle of Power (+200g), you should win.Last battle play on your gate (Character), use trap if nessicary, you should win.Three Gates and you win! P.S. I realize you don't have all of these cards, but if you get them, it's a good strategy.