Board Thread:Questions and Answers/@comment-198.27.175.21-20180604082549/@comment-26447088-20180604233209

It's possible, I think you just need to adjust your deck.

I'd suggest maybe doing Idun, Remix Guna, Spring Guna, and add Remix Salix and Djehuti. Run K&S assist, if your union has her available. If not, then opt for Cronus to clear rez and stuns. Reason being, Idun's Unique depends on your assists being all Earth. As only two of your three assists are Earth units, she isn't reaching her full damage and skill % potential (right now she's only getting 30% ATK boost and no skill boost, instead of 45% ATK boost and +5% boost to her Multi/Rush).

If you don't have Remix Salix, I'd suggest going with Ba'al in the meantime (though you're going to want to get Salix eventually since she's versatile and useful). I'd choose Ba'al over Iseult because Iseult is cut by Djehuti, meaning that there's only a 50% chance that she'll get her second action. For the remaining waves with no enemy Djehuti, though, Iseult would be better than Ba'al.