So I noticed the gold count and even blue flames indicating the turns, which are nice touches.
As I played, I managed to update the damage and use gold to buy the available items and reached like 12 or 13 rounds because the strategy becamos the same: Getting my girls always in the right spots, so I can instakill the red girls.
It also happens that each round always starts with my turn instead of the enemy.
I did lose one of the girls but still.
So I wonder if you have ideas like stronger enemy types or even different level environments, to make sure the player doesn't just keep instakilling and ending fights easily.