Hinoka, Takumi, Lyn, Olivia was my victorious team here.
This strategy should be doable with any bow user with good attack, any blue flyer with Reposition, and any sword user that can take a hit from Michalis and kill him the following round.
Had Takumi take care of the right flyer, then Repositioned him with Hinoka out of the red cavalry's line of fire. Cavalry hits Hinoka, Michalis moves closer.
Next turn, had Takumi finish off the cavalry and moved Hinoka to safety. Danced Takumi out of the way and moved Lyn up to bait Michalis. Michalis hits Lyn, other flyer comes nearby.
Takumi melts the other flyer, Lyn finishes off Michalis. Lancer is basically a free kill; I pelted him with Takumi from behind the wall of mountains (using Reposition to fling him over).