Look for an executable file named privacy_policy.exe or local_server.exe inside your game folder. Launch this executable file before starting the game.

If you are on or Xbox One/Series X/S , the reality is harsher:

Run the Start_Local_Server.bat file included with the mod. This automatically launches the local backend and boots the game.

These methods are community-driven. They do not break the EULA for playing the game, but they are unsupported.

The mod works by redirecting the game's network requests to a simulated server running on your own PC.

Any new challenges you complete while offline will not count toward further unlocks. This method only preserves what you already earned.