First attempt with hoard 111+50%; the same team and medal setup as @TheIdleOne mentions, but with Abyssal (+2 purple/+1 red/-1 yellow) banner instead.
In the boss room, I mostly focused on Nyar’Mel just for safety’s sake.
Originally planned to go with Deep Smith but, after more thinking, chose double legend. Smith is really the odd man out. Him doing ordinary damage while Nyar’Mel goes true damage does not seem like a good synergy; add to it that - either damage, or buff armor, with your damage being less than enemy armor gain and your armor gain not being that significant because you rely on barriers from Golem whenever possible…he’d be just holding everybody back.
I guess hoard level 100 is entirely doable, no need to go further for those who prefer as low hoard as possible.