Adapted from

Knife Stab.wav by Mixedupmoviestuff
https://www.freesound.org/people/Mixedupmoviestuff/sounds/179222/
http://creativecommons.org/publicdomain/zero/1.0/

PUNCH-BOXING-04.wav by newagesoup
https://www.freesound.org/people/newagesoup/sounds/348241/
http://creativecommons.org/publicdomain/zero/1.0/