in case you're curious, here's the original map that Eagle was based on:
http://www.vgmaps.com/Atlas/NES/LegendOfZelda-FirstQuest-Level-1%28Eagle%29.png
You can see i did a pretty literal translation, the floor plans are identical, and the monsters are replaced 1-for-1 with quake monsters (bats become scrags, gels become spawn, skeletons become knights, etc.) Key placement is identical, and the other special items are replaced with quake weapons, but the placement is the same. The secret spots where you can bomb a hole in the wall are recreated (rockets or quad shotgun required to break them), the fact that if you attack the friendly guy his torches will retaliate is recreated, about the only thing i didn't recreate is the statues -- at the time neither me nor my level editor (qED) were up to the task of creating nice looking statues out of brushes.