: Ensure every part of the download is in one directory.

To properly use a multi-part FitGirl repack, you must have parts (e.g., .part1.rar, .part2.rar, etc.) in the same folder.

: Your primary tool is Astra , an AI-powered "Entropy Device". Unlike the Portal gun which manipulates space, Astra manipulates time for specific objects, allowing you to rewind their movements by up to 30 seconds.

: Run the setup.exe found inside the newly extracted folder. Follow the prompts to install the game to your desired directory.

Solving a "split" archive like the one you've mentioned—specifically for , a first-person time-manipulation puzzle game—requires combining several RAR parts into a single usable folder. Technical Installation Guide