Diablo Heavy is a TTF character that was designed in order to help you change the regular appearance of your papers. All you need to do is get and install the font onto your computer then use it when writing your text documents to see how it will modify their aspect. To install it, you can simply right-click the file and click Install. Alternately, you can install a font by dragging it into the Fonts folder you will find in the Control Panel page.