Flame Caldera is the sixth and last stage in Volkanos Volcano.
Doge, Snache, and Those Guys will be spawned around the start of the battle. Spawn a few Wall Cats to stall them and to generate your wallet to the max. Once your money is maxed out, start sending out Dragon Cat. Keep spamming Dragon Cat only until the base reaches 600,000 health, where you can start spamming Sexy Legs for extra support. Once the enemy's base health reaches 500,000, Kory will appear. Keep spamming Dragon, but not Sexy Legs. Along with Dragon spawn in Valkyrie and Mythical Titan to support. Once you have killed Kory, spawn in everything so the base can be destroyed faster.
If you do not defeat Kory fast enough that he reaches your base, do not worry; as a last resort, once Kory approaches your base/lose too many Dragons, save up money. Once he starts hitting your base, spawn in Bahamut to finish it off. It should work if you have dealt enough damage.
If you have Ring Girl Cat , you should have no problem at all; 2 on them stacked and at lvl 30 (27 should be enough) can kill kory by themselves by simply attacking first, knocking him back, and attacking again when kory is back, repeating the process; due to their long time between attacks and the pause after attacking, ring girl cats will never attack too early because of peons nor too late and always attack again when Kory is back, but before he does anything, making this unit perfect for dealing with Kory. However this strategy requires a high-level Ring Girl.
- Using bulky cats will help as they will not die from the shockwave while attacking. Examples of such cats are Mythical Titan Cat, Dragon Cat, or even Ubers such as Sodom or Maeda Keiji.
- Stall the beginning of the battle with Wall Cats, but do not use meatshields as they trigger shockwaves. This will lead to your other cats being hit before they can hit Kory.