For Floors 20-29 expect to see an awakened cat enemy in every level.
This one was fun to do.
I knew someone would ask "how do I do this w/o major leaguer??" so I did a Mina (waifu) strat instead. :^)
Stall the I.M. Face until max money and then begin stacking Mina. Skip to 6:00 if you don't want to see the stalling/stacking. Begin spawning your ranged attackers and start proceeding to the base. Once the base is hit, Pastry cat appears and is supported by another Face, Alpacky and Calamary. Since I didn't use Manics I figured four meatshields would be necessary to hold back Pastry cat. Mina should be able to take out the Calamary and once it's gone the level gets easier. Slowly take out Pastry cat with your large stack of ranged attackers. The Alpacky should be very easy to kill with a decently leveled Macho Legs. Remember to have a cat cannon ready for the Alpacky's survive lethal strike ability.
Basics are Lv20+70
Crazed are Lv40
Specials are Lv30