Basic strategy is to resolve many different Gouki monsters as much as possible (minimal 2 so our Gouki Rematch is online). From there you can go for any link play while searching tons of card, my preferred end board is Apollousa + Linkuriboh/Silent Swordsman. Also dont forget to search God Phoenix Gearfried via Isolde. Going second is much easier as we can OTK with Giant Ogre or Accescode to break board + big damage (you can link climb it from Unicorn for maximum atk gain and more removal).
Expected end board:
Pros: Very consistent, every Gouki monster replaces itself, great follow up play, great going first or second, bunch of handtraps, many possible big beater monsters (some with non-targeting removal).
Cons: First turn board isnt too strong, bad matchup against backrow deck, possible bricking with the Silent Swordsmen and handtraps.