So this deck is pretty simple...
Hopefully stall out the enemy with Gozen Match, Mistake, Barrier Statue, and maybe Skill Drain if it is drawn.
Play Flawless Perfection and Fists of the Unrivaled Tenyi as support possibly getting a Gagagigo the Risen or a Blue-Eyes Ultimate (if Barrier Statue or Gozen has been blown up) when Fists gets blown up.
Keep summoning monsters. Maybe summon an XYZ monster if the board gets too big. Abyss Dweller is pretty good for making sure the lv8s can beat over things AND has a good stall ability (assuming Skill Drain isn't around). Snow-dust giant will also help make the water monsters seem bigger. Use ancient rules to summon the lv8s.
Heart of the Underdog will hopefully maintain card advantage.
Hopefully win with a Raigeki or Mirror Force.