You can win this battle by surviving 15 turns or doing a bunch of damage. if you want to use a setup like this one, but to just survive. Switch Penth out for a unit like Hans or Jeanne. (second Asterios clearly!)
Music Used:
Alma Awakened - Ninja Gaiden (xbox)
Tiamat's Theme - Fate/Grand Order
Fate Grand Order Babylon Boss Battle Gorgon Tiamat thingy Penthesilea Smash