While many modern mods use the Simple Mod Framework to handle this automatically, some classic or manual mods still require a manual patch.
: While originally tailored for certain launchers, versions of this tool work for both Epic Games Store (EGS) versions of the game. User-friendly automation hitman 3 package definition patcher
The tool targets a specific file within your game directory, typically named package_definition.json (or similar configuration files depending on the version). While many modern mods use the Simple Mod
target: scenes/*.pkg match: $.resources[?(@.type=="texture")].path action: replace value: "assets/textures/hd/$basename" target: scenes/*
Specifically, it patches the Glacier2.exe or Hitman3.exe binary in your system memory (or on disk, depending on the version) to allow the engine to load modified or loose definition files. It tells the game engine: "Do not verify the hash of the package definitions. Trust the user."
Upload the file to the Notex XTEA site, click Set Patch Levels , and save. Executable: Place the patcher in the folder and run it.