There's a reason it's a Deadly stage. This stage sends out many powerful enemies, like Gato Amigo, Skelecat, Hyper Mr., and others. Pretty much the only thing this stage is missing is Dancer Cat (who you will encounter in Awakened Carnival II), but there are still enough enemies to keep you on your toes.
Strategy 1 (ft. Shadow gao)
Shadow gao seems like a cat that can dominate, rich cat to make saving up easier, if you bring sniper cat, make sure you turn it off when shadow gao is attacking, as it may disrupt his attack.
Strategy 2 (ft. Unprofessional editor)
This stage is what you might have guessed, all the awakened stages combined. The bottom line: if you can beat Heavenly Tower Floor 20, you can beat this with no problem.
Line 1: Bronze Cat, Rope Jump Cat, Space Cat, Clockwork Cat, Hoop Cat (Eye Of The Storm cat combo)
Line 2: Crazed Cat, Manic Eraser Cat/Eraser Cat, A. Bahamut, an AOE attacker with more than 335 range (such as Paris Cat), The Flying Cat/Manic Flying Cat. Feel free to customize slots- for example, A. Bahamut is likely the least useful cat here.
I'm not really a professional strategy maker, but I wish you luck. Manic versions are preferred over their Crazed versions, and their Crazed versions are preferred over their normal versions.
Strategy 3 (ft. Kasa Jizo and Princess Kaguya (optional))
Similar to strategy 2 but with specific cats that I used.
Line 1: Eye of the storm cat combo (didn't use these cats in battle)
Line 2: Manic Mohawk Cat, Manic Eraser Cat, Cyborg Cat, Kasa Jizo, Princess Kaguya (optional)
Basic strategy is to spam meat shields and Kasa Jizo but the others only if you have money, I didn't have much of a problem with this level, however my cats were high level except for Princess Kaguya. Cyborg cat and Kasa jizo were over level 30 when I used them but the level probably can be done with lower level cats. Princess Kaguya may not be required as I didn't have her at a high level but she is recommended because of her cheap cost and her area attack. A cat like pizza cat can replace Princess Kaguya if you have him but the replacement must be an area attacker and should have a decent range and/or decent health so it can survive many hits.