For a long time, Quinn had been focusing on his blood powers, his celestial powers and more, trying to figure out the different ways he could use them. Since he couldn't exert his celestial powers properly, it left him with no choice but to use his powers in a physical sense. That led him to improve his hand to hand and close quarter combat abilities.
Fighting with blood aura was handy when fighting against multiple enemies at once, but it just didn't cut it when he was fighting a strong enemy like Athos. In the future, there was a possibility that Quinn would be going up against someone like Athos without Sil around.
If that was the case, then Quinn needed to figure out some other aspect that he could evolve, and while creating his own space he had mainly focused on improving his shadow powers.
