This Red variant of Kory is almost the same, performing a medium attack and firing a Shockwave. However, the Shockwave range has been almost tripled, making it very hard to defeat. It only has one knockback, causing more Shockwaves if you don't use any anti-Red cats. Luckily, it has lower range and movement speed.
Strategy
Despite the waves, there are several units who can easily stall this enemy. Roe Cats, for example, have no issue holding Berserkory back plus they can lower the damage of its attack AND wave. Other units who can tank and slowly kill this enemy include Maximum the Fighter, Island Cat and variants, Ultimate Bondage Cat (talented) and Can Can Cat, to name a few. Note that most of the Red enemy tanks previously mentioned Berserkory can use as a stepstone in order to hit your other cats.
If you have iCat, then deploy 2 of them in out of sync timing. In doing so, you will render Beserkory powerless (granted there aren't any other main attackers for support), which you can then finish off easily.
Wave Blockers such as Octopus Cat are very effective at blocking Berserkory's Shockwaves, allowing your units to get in close and destroy it. iCat, if paired with Octopus, pretty much nullifies Berserkory entirely.
One day I woke from a nap to find a Kory making stew in my kitchen. After I kicked him out for raiding my fridge, it seems the sunset on his back awoke his hidden dark powers.
I awoke to the cooking in the house of Batoruneko of sponger
Eccentric koala. Because it uses high-quality materials only it was also kicked out of the house. Finally he was steeped in the setting sun wake up to the secret of the "wave"