A bright flash of light and a massive sword with a holy aura had fallen on Lemuel Elon and Darius Rueden. They died together. Growing up together, they entered the Templar Temple as a pair and eventually left together. The overflow of divine aura left behind by the Holy Sword of Judgement instantly burned the undeads nearby to ashes, injuring even the three Captain class undead. Darius Rueden's single sacrifice was enough to tip the scales in favor of the living.
The Devil not only lost his demon lord commander, but the majority of his soldiers were also burned to ashes, and his other high-ranking undeads were injured. He had not anticipated Lemuel Elon's soul awakening at the last moment. Most of his undead servants were linked through thoughts. He ordered him to kill Darius Rueden, who was hugging him at the time, but his soul awoke and refused to kill Darius Rueden, instead accompanying him in death.