It’s been done within the last two months.
There are easier factions in my opinion, but the idea that getting past room 2 of Amanithrax is impossible with a low hoard is laughable.
And neither of the V rooms need to be done to clear the faction, by the way. Only have to beat the I, II, III, and II in this picture:
So that complaint is only valid if you’re planning to full clear every run during the Tuesday event to buy the fewest potions/sigils possible, but by then you should have so many bonus stats it shouldn’t even matter AND it’s a terrible faction to spend gems on in that way because it’s easy enough to be done potionless.