To change the FOV in the game you need:
1. Unpack the game FOV.ZIP to the game folder.
2. Open file …Dead Island \ DI \ out \ Data \ Skills \ default_levels.xml, find parameter prop n = “CameraDefaultFOV” v = and after the equal sign (in quotes) set the desired value. (The game contains the value “62.5”, the above file corrects it to “80”)