About This File
Unpack the archive with software like 7zip, then patch the main game exe with the tool.
This will remove the letterboxing (black bars) from the game, resulting in more vertical FOV than ever before. There will be some vertical stretching of the menu and subtitles.
If you have the game on Steam, you will first need to adapt and follow the first steps of my DQB2 guide in order to apply the patcher. Such are the rules!