Run the "Verify Files" batch file included in the folder.

It is common for antivirus software to flag repack installers as "False Positives" due to the way they inject data during decompression. However, you should always scan the files with a reputable tool like Malwarebytes before execution. System Requirements for Installation

Briefly turn off your antivirus during the install process to prevent it from blocking the decompression tool.

While the game itself has its own requirements, the Visfed V4 installer has "overhead" needs during the decompression phase: