While Su Yu and the others were fighting and retreating, they quickly reached the eleventh floor. Su Yu personally destroyed the staircase of this floor, and watched as the monsters that had been trampling on the stairs once again fell heavily.
The horde of monsters behind them also pressed inward with their flight, the three leader monsters had just summoned new ones which were destroyed, and they chanted again, Water Dragon, Giant Green Python, and Concrete Giant were summoned once again.
Currently, Ada and Wu Tian's Category 5 Lifeforms were all in the fifth stage of growth, their Combined Attack Skills could only be used five times a day, and they had already used them once each, leaving four uses each left. Su Yu watched the three terrifying monsters charge again, but was reluctant to easily use the Combined Attack Skills.
Unless it was absolutely necessary, he was unwilling to casually use this precious opportunity for a combined attack.