บท 649: Wyvern (5)

While the monster flinched, Meryl fired three arrows instantly at the left eye of the monster. They assumed that the damage output of those would be enough to kill the monster, but they failed for some reason. She used her zombie dragon and made it use Fire Breath, but that didn't help much… those beasts had Fire Immunity level seven hundred, after all. Still, they finished the creature when it emerged the next time. Still, they would need more to make their combination more powerful. Billy could think of a few methods, but it wouldn't help much telling them.

"Make it fly as fast as you can," Billy said to Meryl while he was controlling his drones even faster.

Meryl nodded. In such an environment, they couldn't afford to build their strength slowly, they had to first find a place that could be defended and then use it as a base before anything else, and the best place would be the spot between floors.