Number 64: Ronin Raccoon Sandayu - Simple yet Effective

Preferably go 2nd because of Ronin Raccoon Sandayu's effect. Summon loads of level 2 beast type monsters (how to should be pretty obvious if you test draw about 3 times) if you can, if not you set up a way to trigger card effects to summon them in your opponents turn. Preferably summon 2 Number 64: Ronin Raccoon Sandayu on your first turn (pro tip, put one in the extra monster zone, because your field will get very full.) use both of their effects to summon the tokens. Both Sandayu's are going to be immune except from effects that return them to the hand (Extra deck in this case) or banish them. Use one Token to trade blows with the highest attack monster and attack directly with the other and attack directly with both Sandayu's. There are also other techniques but they are more obvious, so I wont bother listing them.