The stage will first spawn an Ultimate Bondage Cat, and you need to kill it fast as the stage will continuously spawn them along with the other enemies, alternating between one Otta-smack-u and one St. Pigge the 2nd. Three additional Ultimate Bondage Cats will emerge from the enemy base when its health falls below 50%.
Strategy 1 (mid-level, ft. Driller Cat)
If your cats' levels are around 30, Power Driller Cat's effect allows you to win because it cuts a single Ultimate Bondage Cat or Otta-smack-u's attack down to 10% at a distance. Dark Emperor Catdam is also good for his Area Slow effect. Tesalan Pasalan can be a good choice (better than Crazed Bahamut) when the Ultimate Bondage Cats have not stacked up to 4 of them yet.
The enemy base has very high health, so if you don't destroy it in a short time, don't get surprised when the Ultimate Bondage Cat stack kills many of your cats!