Once all parts are downloaded, right-click on Part 1 and select "Extract Here" (using WinRAR or 7-Zip). The software will automatically pull data from all the other parts to recreate the full game installer.
"TENOKE" is a well-known "scene" group that releases cracked versions of video games. The file you are looking at is of a larger multi-part RAR archive. How to handle this file: ICARUS.v1.2.40.107990-TENOKE.part07.rar
After extraction, you will typically find an .iso file or a Setup.exe . Run the installer to install the game. Once all parts are downloaded, right-click on Part