no damage run 4
https://yenkee-wiki.win/index.php/Surviving_the_Black_Iron_Prison:_A_The_Callisto_Protocol_Walkthrough_Guide
A no damage run is a self-imposed challenge where a player must complete a game, or a specific section, without taking a single point of damage. This often requires flawless execution, intimate knowledge of enemy patterns, and extreme patience. Players typically save and reload constantly, turning every encounter into a tense, precise performance. It's a test of skill that goes beyond typical completion, aiming for a perfect, unmarred playthrough.