choosing paladin or demonslayer ?

Works for me, actual defense doesn't give any benefit to resisting RA attacks though. Skills do work, at least they did, last time I was there since it's not about defense but complete immunity. I also know that Bishop's party shell/shield works too (at least it did, again, last time I was there).

I'm just reporting what my experience has been, and in my experience Pianus gives me more trouble than RA, RA is just tediously long.