

Mardaw shrine Nightmare clear without recent banner electric whip
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The VH mode is hard to clear for many people, but once you get the hang of it nightmare isn't that hard to clear.
Theif lv 50, Paladin lv 35, Sage lv 30(with no nodes done yet) is somewhat stable for me to repeat this ugly frog, but I still can't do the missions done yet.
Nightmare version is just the stage having tons of more minions and they hit like a truck, so taking advantage of CDG to get many boons as possible, sacrifice two of your characters when facing Mardaw (restart if one of them fell down during fighting the minions). The frog itself doesn't have a noticeable HP difference.
The picture has me less than 10 seconds left to beat it, but once I adjusted the gameplay, almost a minute is left for me. If I abuse the Ice shards and archery rolls, it is faster.
Since this event has 40 days left, those who have unlocked advanced vocations would be more than enough to clear this