They don't need him to tell them how bad things are but he did. He is considerate that way.
"Can you feel it?" He asked them.
"I can. I can feel it. It is in the air. I can smell the dank odor of defeat and also taste the sweet taste of victory."
His voice settled down into their minds like an anchor. And like an anchor, it weighed them down. They became heavier emotionally and mentally. They can't hold on anymore after being pressured constantly. One of them failed to activate their divine ability so they were unprotected.
He swooped in like a shark. He bared his sharp teeth at them and took a large bite out of them. His blade flashed several times in a second. They faced a barrage meant for 5 as a consequence of that mistake. The 3 fell at once. They can't defend against his barrage of attacks after becoming weakened so they were shredded.
"Five down and none left." He remarked at the devasted ruins of their battle.