Hollow Knight Silksong ace somehow beats the entire game without taking damage

Hollow Knight Silksong is a hard game. Annoyingly so, a lot of people believe. So many people that developer Team Cherry quickly patched it to make several bosses easier. Still, the soulslike and Metroidvania DNA makes every encounter a difficult battle and many players, myself included, still haven't finished the game. Other players, however, are making strides. YouTuber 'HuntHussle' appears to be the first person to complete the entire game without taking damage, a feat so Herculean that I can't wrap my head around it.
RELATED LINKS:
Hollow Knight Silksong guides and walkthrough
All Hollow Knight Silksong bosses in order
Hollow Knight Silksong map, area order, and Shakra locations