no damage run

https://myjacobleestorydaily.clearminster.com/posts/the-jacob-lee-story-survival-and-sacrifice-in-the-callisto-protocol

A no damage run is a self-imposed challenge in games where you complete a level or boss fight without taking a single hit. It requires perfect knowledge of enemy patterns, precise timing, and often hours of practice to achieve that flawless, untouched victory.