Board Thread:Questions and Answers/@comment-82.132.232.177-20141231030146/@comment-174.67.241.47-20160207161422

U need maxed efficiency, wallet, cat recharge time, cat attack treasure, cat hp treasure (not really though but it helps in the beginning), and maxed cannon recharge and dmg. You might also need high base hp for recovery time.

You need all fodder cats (basic, wall, boogie) and you need valkyrie cat and dragon cat. Yo u can also add in paris cat if you have it.

Use wall cats to fend off the weak enemies in the beginning until max worker cat and maxed money. Then send out ur dragon (or/and paris) cats. Send them out right when they recharge. Use ur valkyrie cat every time she recharges and send her out with the dragon cats in the beginning. Afterwards, you'll have like 10 dragon cats and almost two valkyrie cats when bun bun comes out. After that, the dragon cats and the valkyrie cats should kill him. Actually, you need maxed cat health treasure with all superior because without that, your dragon cats will die in one hit and u will lose if they die.

U can literally beat Bun Bun with all cats given to you. You don't need any special cats but it increases your chance of winning. This worked for me too.