hi,
can i install the game , patch and dlc offline with manual exe and bin files or does i need to be online?

You don't need to be online for the installation, you can install the game on top of Mount Everest if you'd like. Given you have all necessary files.

Thank you for your fast and clear answer

Sorry, when i ask here, but what is the correct sequence to install the files offline after Download? First Game-Install from the Discs, after that the first Patch, then Language-Patch?

Im having problems updating the game, from where is possible to download the patches in order to manually update the game, thanks in advance!