The stage starts off by spawing The Face (Floating) with a large group of Pigeon de Sable. Then slowly it will spawn Kory, Dober P.D and a second wave of The Face constantly for a while. The spawning of Dober P.D will decrease but Kory will continue to be spawned through the game at a constant speed.
First let the group of Pigeon de Sable come near to your base before stacking a few meatshields to spawn C. Sexy Legs and Paris. Then spam upgrade your Wallet to Level 5/6. Next, constantly spam King Dragon, C. Dragon, C. Sexy Legs and Paris through out the entire game. Do not spawn meatshields anymore as they just increase the range of both Dober P.D and Kory. When nothing is blocking the way to The Face, spam Butterfly to increase damage output done onto The Face before the next set of Kory and Dober P.D arrive. A.Bahamut can be used to kill Kory and damage or kill Dober P.D and The Face if lucky. Rinse and repeat until you win the level.