1. Run "New Game" once for the game to create a folder to save the game. Save game folder location:
"C:\Users\(username)\AppData\Local\Adventures of Willy D XXX\Savegames"
The "AppData" folder is hidden by default in Windows.
2. Download the save file corresponding to the current version of the game.
3. Run the downloaded file as administrator. If for some reason there are problems with the installation, you can manually unpack the files into a folder convenient for you (for example, create on the desktop and select it when starting the installer), and then place the save files yourself in the path indicated above.
* After installing the save files, you can start any chapter by selecting it in the "Autosaves" section of the main game menu.