The character set includes: Upper case letters (on both upper & lower case keys) and numbers. The vast majority of punctuation and international characters. And the source of the Ground Zero blast, a nuke explosion, And other goodies are scattered around in the extended characters. Best used as a display font in sizes at or way above 48pt.
This font graphically represents what would happen to any unfortunate font that finds itself too close to Ground Zero. Pray that it never happens. It's a terrible demise for a font.