Stealth flipping an Ex and kicking it in mid-air

St. George chopped through an ex’s neck and watched its skull bounce away. He glanced over in time to see Stealth flip a dead man over her shoulder and spin to kick the corpse in the head while it was still in midair. “Now you’re just showing off,” he said.
“I am testing my muscle memory,” she said. “Their numbers are not increasing as much as I expected.”

Excerpt From Ex-Purgatory, pg 480
Peter Clines
https://books.apple.com/us/book/ex-purgatory/id676938479