Enemies with high HP and/ or multiple attacks and HealAll spells

[plangworthy]

As in the title, I got a seed where the Granite Titans had multiple attacks AND HealAll and I could NOT get into Zoma's Castle. Not sure if they didn't also have boosted HP or regeneration but I fought them for ages and never killed a single one with best equipment and pretty decent levels.

Seed was 2121610868, default options.

I know this could result in a philosophical argument but I think some logic to make sure tank enemies don't have HealAll / HealUsAll or perhaps that enemies with those spells only get to attack once per turn?