As soon as the stage begins, one Mr. Angel spawns. A couple seconds later, another Mr. Angel spawns. After both the Mr. Angels are out, the boss, a 10% Gabriel, comes out on a timer. It is followed by three Corporal Weylands and two H. Nahs. More 400% Gabriels will spawn through the battle at a mild interval.
Using the Manic forms of the crazed cats increases the probabilities of victory. Success on using this strat depends on properly protecting A. Bahamut with the Crazed Cats as to let him dispose of the H. Nahs.
Strategy 2 (Cheese)
For this strategy high level cats are a must, as the timing to be able to destroy the enemy base is quite tight. Using the True Form of Swimmer Cat is also advisable.