Having cleared Eirika’s LHB on Abyssal with Tana/Eirika team, I wanted to see if I could also clear the other 2 LHB that were available using the same theme team. Turned out better than expected.
Having Fury on Eirika was mainly for AI manipulation. This causes the enemies to move left on the 1st turn to target Summer Tana, instead of upward. L!Eirika also needed to move down to block the lower bridge on the 1st turn to make this happen though. This bit of AI manipulation slowed down the enemies' advancement, allowing them to be taken out at a pace my team could keep up with. The rest was mostly positional play.
Hope you all enjoy!