"This would have taken forever if we didn't know Spiritual Core… it is really a lifesaver," Icarus said when he saw the enemies decreasing in number. "Even with my speed, I can only do so much."
Billy could have made things end a lot faster if he had used ice magic on the entire floor, but that would only make him level up a couple of skills. In order to maximize the effects of his powers, he used as many skills as possible. He didn't have to hurry since he wasn't alone, after all. Also, Billy was observing those three in order to learn the quirks of their skills. He hadn't been making much progress so far, though.
In any case, since they hurried up, the group managed to clear that level after fifteen hours. They had gotten a bit tired, but since the tyrants were spawning in groups of twelve every thirty seconds, they couldn't slack off.
