|“||Clear the Hall of Champions in 3 minutes and 30 seconds or less.||”|
— Feat Description
Hall Villain is a Feat that can be earned in Shovel Knight: Plague of Shadows by completing the Hall of Champions scenario within 3 minutes and 30 seconds.
Since the rematch already has a time limit of 3 minutes and 30 seconds, completing the rematch within time limit is already enough to earn this feat (and a Music Sheet).
Also see Hall Champion for a similar Feat for Shovel Knight, except that there's no time limit.