Alright, here is the strategy for this stage Start off by deploying some Crazed Whales to stall Hannya, while also upgrading your Worker Cat to Level 3 or 4. Bore phase: When the first Bore arrives, use Island and Crazed Whale to stall and continue slowly upgrading your Worker Cat. Killing the Bore before R.Ost arrives is crucial as dealing with them both will be extremely troublesome, so add Crazed Dragon if needed. When the Bore is defeated, continue deploying Crazed Whales and Island Cat to deal some damage to Hannya. R.Ost phase: When he arrives, stop deploying them, instead spam Eraser and summon Awakened Bahamut, Crazed Dragon and King Dragon to damage the R.Ost, all while continuing to slowly upgrade your Worker Cat. Awakened Bahamut should easily take R.Ost down if timed well. A good way to do this is to send out one Eraser when the R.Ost is really close (next to your base), and as soon as R.Ost attacks your Eraser, send out Awakened Bahamut. Then, spam meatshields after R.Ost gets knocked back. This strategy to time Awakened Bahamut could also be done with Thunderbolt for an even easier timing. After Bore's death, start sending only Crazed Whales and Island Cats out to damage Hannya. Repeat the above when the Bores and R.Ost arrive and you should be able to win the stage eventually. Note: Manage your money properly and do not unnecessarily deploy cats, or it may result in your loss. This is all a joke of course.
