The follow-up kick didn't go through when my opponent was incapacitated by the first. Didn't know if this was a bug or really, really rotten RNG luck. The help file seems to indicate this could happen, but I've never seen it before.

civilized <>

You dodge DudeMan's slash.
You parry DudeMan's punch.
You parry DudeMan's slash.
Your punch EVISCERATES DudeMan!
Your punch mauls DudeMan.
DudeMan absorbs the force of your punch with a studded leather girth.
DudeMan is convulsing on the ground.

civilized <> Quickly spinning on your heel, you deliver a crushing kick against DudeMan!
Your double spin kick DISMEMBERS DudeMan!
DudeMan is incapacitated and will slowly die, if not aided.
DudeMan is convulsing on the ground.

civilized <>
Your punch misses DudeMan.
Your punch EVISCERATES DudeMan!
DudeMan is DEAD!!
You land the killing blow against DudeMan.

n/t