They didn't try to confront the boss head-on. With their cores full, they focused on long-distance combat, and they didn't stay in one place. Smart.
If the monster was focusing on Stallus, then Alex would hit it aggressively with lightning arrows. When it turned on him, Stallus would not let it rest with explosions.
The boss was forced to use its club as a shield as it ran from one to the other, growling with aggression. It stopped in the middle, confused about what to do next.
Then suddenly, it turned on Stallus and leaped, ignoring the lightning that cracked through the air. Maybe it thought she was the weakest.
Immediately after the boss turned on her, Stallus began moving, dropping broken crystals on the floor and using all her essence to jet herself backward.
The monster touched down right on the crystals she had dropped, and an explosion blasted it. The monster staggered, its side bleeding.
