SHEN JI YUN directly abandoned being stealthy. The moment he learned that the Dark Saint was at the room where Beelzebub's body was and was now confronting Luo Yan, the plan of being stealthy and silent was immediately thrown out of the window.
How could he even worry about that when his rabbit was now alone with an obviously mentally unstable NPC? Besides, since it was Luo Yan himself who told him to blow up the island, it meant that he had already secured the archdemon's body and was just waiting for a chance to escape.
That only meant one thing. They could now go all out without thinking of the consequence.
So, he told Eclipse and Dusk to cause as much chaos as possible. They could eliminate any dark mages they came into contact with. He initially thought that the two would argue with him about it, saying that they wanted to go where the Dark Saint was. But surprisingly, they were very compliant about it.