Unaffected by scream

The Valkyrie spun full circle with her axe to build momentum, called something in a voice almost like a note of music, and the head of the axe blazed with runic power. She struck Ethniu in the ankle. In the back of the ankle.
In her Achilles tendon.
And for the first time in millennia, mortals heard a Titan scream in pain.
It was like a psychic bomb went off. A wave of agony hit my nervous system with the clarity and intensity of dental pain, pure and unfiltered. The world staggered to one side. I’d have fallen if Sanya hadn’t caught my arm.

Battle Ground Chapter 32, Page 312