ahaha I saw this and thought Nope! Ima make it possible lol Took my wiz to WH in the first small room.
Shes with 27k hp, No temp buffs/ Only priest almighty/ mana/ 20% hp scroll/ Monkey pet/ Vit twins/ 2 Aquas +15 and sd armor AND SOLO.
ok ok she was chewing through the hp pots like crazy. 8% Hp abs on staff did its job to a point but yea, still needed the pots.
So yea solo grinding there IS do able, just not very practical considering the pots she was eating. With an upgrade or even just some temp buffs it would have been a whole lot better.