Just take example on a LOF file of another level. And you shouldn't break your DK just because of a level. Anyway, here's the format of the file:
Code:
; KeeperFX Level Overview File (LOF)
KIND = MULTI (Leave it to MULTI since it's a multiplayer level)
NAME_TEXT = Enter the title of your level here
ENSIGN_POS = X Y (replace them with the X and Y coordinates of the ensign position on the overworld screen)
ENSIGN_ZOOM = X Y (same, but this time for where to zoom)
PLAYERS = X (amount of players in your multiplayer level)
OPTIONS = (Just leave it blank)
AUTHOR = Your name
DESCRIPTION = Enter its description here
DATE = Date of map creation
Just create a new .TXT file, write the lines above with the modifications and save as MAP00207.LOF and you're done.