The stage starts off with a Brollow, and Brollow will spawn slowly. After you attack the base down to 99% health, a huge horde of Brollow will be spawned.
Blocking the first Brollow with a few Crazed Wall Cat is necessary, the player should have maxed money before going to the Enemy Base.
Ururun is very useful, due to her good damage and quick attack rate. Keep her protected with meatshields, as the Brollows can kill her easily. Use 4 meatshields and Drama Cats if you have them and the stage will be much easier!
Kotatsu Cat is very useful for this stage as it can take many hits from the Brollows.
If you have Warlock and Pierre at level 20, you can cheese this stage by using it. Since the base has 300,000 HP, and there's no boss unit in this level, Warlock and Pierre can OHKO the enemy base and you won't have to face the flock of Brollows.
If you have Divine Kai, this level becomes extremely easy since Kai only takes 1/4 damage from floating enemies, which means the Brollows can only do a few thousand damage instead of ten thousand.
If you have a high-leveled Cameraman, you can do massive damage to the Brollows without them starting to plow through your meatshields.