If you are trying to get the game running today, I can help you:

Fixed menu freezes when transitioning from the campaign to Extinction mode. 👾 Content Included

Troubleshoot common in the PC port. Set up Extinction Mode for solo play.

: Fixed bugs where weapon attachments wouldn't save in offline profiles. 📋 System Requirements (Post-Update)

Today, the official Steam version of the game has been patched many times beyond this initial update, rendering the "Update 1" files obsolete for anyone owning the legitimate game.

With the RELOADED patch applied, the modified minimum requirements became: : Windows 7 64-Bit / Windows 8 64-Bit

Find the for modern Windows 10/11 compatibility.

Since this was "Update 1," it focused on the core game experience rather than adding DLC maps. : Full access to the 18-mission story mode. Extinction Mode : Unlocked the base "Point of Contact" map.