Alien.isolation.collection.part3.rar -

: For multi-part RAR files to extract correctly, you must have every part (Part 1, Part 2, Part 3, etc.) in the same folder.

If you are looking for a "complete post" to help you extract these files, here are a few general tips:

This specific filename pattern is common for game installers or community-made content split into smaller segments for easier downloading. Based on official information, is a comprehensive bundle that includes the base game and all its DLC, such as:

: Corporate Lockdown , Trauma , Safe Haven , Lost Contact , and The Trigger .