To fix or repair the game on Steam, you should first use the official Verify Integrity of Game Files tool, as this is the standard method for resolving corrupted or missing files. If you are specifically looking to use a third-party repair archive like Distrust_Fix_Repair_Steam_Generic.rar , these are typically community-made "online fixes" used to enable features like multiplayer on unofficial copies of the game. Official Steam Repair Guide

If your game is crashing, won't launch, or is behaving incorrectly, follow these steps to repair the official Steam version: