Sup? Jamke is a pushover, here is an easy way to win it.
Sadly I use both Brave Hector and Veronica, so it may be less FTP friendly. But my Olivia did fine with the one Armor unit she fought, meaning your armor smasher Olivia’s are great for this method, if not, sliver sword is fine, she doesn’t use her Moonbow to kill the armor anyways.
I use Veronica (free pull with +6 Atk through seals and skills, and 2 more from my support) to double tap Axe Knight, using Olivia’s dance.
Fae is mostly here for her QR, draw back and movement type. So Dorcas, Kana F, or Even CC Boey would do. (Armored boots on a Hector would also be a way)
Hector has Distant Defense, this is as the flier with its guidance skill leads them forward. A DC QR Effie or Hardin (a mixed bulk blue DC) would fit this bill, one rounding the two ranged.
Veronica double taps the Anti Cavalry, then you use Fae for the Only time and pull Hector back so he only deals with the sword Calv. His defensive bulk will keep him alive. His stat line could do this at neutral as well. As mine lost speed, but gained health. Not changing his Def, Res, or Atk stat at all.