Managed to clear it with my light team with a random's Mana as sub, might be okay with just a St Nick. Had Mordred (0-star weapon atk weapon), Tsuki, Raph, Eros and Sol with Meta and Micheal in subs. It's a rather safe set up but it gets the job done. Did mess up during stage 5 though, Raph and Eros died during Crom as I messed up with timing by clearing stage 4 to quick and entered stage 5 with no debuffs while the two kept eating regular attacks by Crom. Didn't help I pushed into rage with a regular set of attacks, so they died to the special activation/trigger ability with no defensive skills up.

I might be able to use the same party with Arthur but not having Mordred might be an issue considering I don't have elemental advantage. I might try after I get my main clears but supposedly they change the 2nd week? I'll just use one of my free days, assuming I don't fail any, to attempt it later.