Soloing Horntail/Chaos Zakum

Hello! Just wondering if anyone knows (roughly) what sort of damage ranges I'd need in order to solo Horntail and Chaos Zakum on a Shadower/Dark Knight/Demon Slayer/Evan? Any and all help would be really appreciated! Thanks a lot.

well, I solo HT and Czak in about 40 minutes each, with a 75k selfbuffed range on my hero.

I think it depends more on your survivability and control than it does range.
Seduce + 1/1 is deadly to most classes, some are able to survive it with ease.

If you're asking for Shadower it's 60k buffed minimum. You can probably survive seduce + 1/1 with Meso Guard.

Need about 90k buffed on a bishop for HT.