E: Here is a kingdom in disarray, with endless damnation.
Okay. So 'here' is the straight clue; could it mean literally
here?
EARTH begins with E, and things from Earth are used in passwords from time to time. But while H is the beginning of 'Hell', I can't make 'eart' an anagram of any kingdom.
The Barrow-Downs are in ERIADOR, which... nearly contains 'Dorado', as in El Dorado? I dunno.
Okay, so probably not here-here. What other places start with E? Um...
actually quite a lot of places. ENDOR seems the most promising for the theme, but once again I can't fit it to the clue at all.
hS