God-killer-master.zip
Based on the search results, is a tabletop role-playing game (TTRPG) created by Connie Chang, available on itch.io.
To use the GOD-KILLER-master.zip file, you should unzip the contents, read the main rules document first, and print or digitally fill out the character sheet to begin playing.
If you can confirm this is the correct game, I can help you find: The specific rules on How the "Moves" system works Setting details (the gods you are meant to kill) GODKILLER: First Blood Edition by Connie Chang - itch.io GOD-KILLER-master.zip
The zip file likely contains the following components, as detailed on the itch.io project page :
Designed for players who want to explore themes of killing gods. Based on the search results, is a tabletop
The primary 33 MB document containing the core rules and setting material.
A 734 kB PDF outlining character actions (moves). The primary 33 MB document containing the core
Based on "First Blood" mechanics (implied by the title).

