Floor 35 is the thirty-fifth level in Heavenly Tower.
Success on this stage depends on building up as high of a DPS as possible with your cats to obliterate the enemy forces before they do any harm. Cyborg Cat is an excellent choice here. Other cats with great DPS include Awakened Bahamut, Drama Cats, Can Can Cat, Ramen Cat, and of ubers, Kasa Jizo, and Immortal Yukimura may help greatly.
Second row: Maglev Cat, Paris Cat, Crazed Gross Cat, Eraser Cat
Send out a Maglev at the start to stall and save up money. When Dolphina reaches your base, begin sending out Paris Cat nonstop with Crazed Gross for extra damage. When Crazed Fish gets near, spawn Eraser Cats to protect your stack. When the Paris stack gets large enough you can stop sending out meatshields.
Cheese strategy ft. Kasa Jizo
By making use of research combos, Kasa Jizo can solo this stage. Jizo must be at least level 35, and at least two SM research combos are needed. If you have Detective Vigler, using his research up M combo with Madame Sumo can accomplish this. Aerial Recon can also fulfill this on its own. Other than Vigler, other combos that can accomplish this are Biohazard (Zombie Cat + Mr.), Bony Bone (Necromancer Cat + Skelecat), and Checkered Skirt (Kalisa + Skirt Cat).