I made one attempt with B!Cordelia and swiftly realised she was going to die too quickly. Needing some tanky, high damage output units. No doubt Omni H will have his Setsuna doing it though.
I did beat it w/ a brave bow Noire and 3 dancers but PA!Azura had to attack once but I did it. I went on the left side bc the armor unit on the right has guard 3 and I need luna to activate to even do damage.
I did it with H!Jakob with 3 dancers. What I did was I had Jakob take damage from Aversa (Ironic she won me the map) on the first turn which activated all of their Wings of Mercys. I used guidance on my Olivia for movement instead of armored boots (outside of turn 1).