my ashstone core was a health Speed, and couldn't hit hard enough, suggest more Power/Health one so i used my Crimson Geode with 3rd attack Elementium Blot, use it when Whiplash did his Cocoon Strike, instead of passing, still need the 3rd pet to finish the fight- i used Hatespark the Tiny to finish the fight
accidentally found a possible improvement.
i did one too many feedbacks, so i finished off whiplash with feedback.
when turbo came back: feedback, crystal feedback feedback
not sure if there was any rng helping me there.
so if keeping track, starting with ashstone's entrance...