Albertoni

I've actually been trying to train myself to do more of what you're trying not to do. Narrow hallways are good when you fill in the solid areas with pits, leaving catwalks and bridges where the corridors would be. Then you are exposed to incoming fireballs but limited mobility. Just another mapping process I'm working on.

That's an interesting way to do things, just keep in mind that the player can fire back, ruining next sections of the map, and the shortcomings of that one Doom 2 level that abused your concept.  Absolutely hate that level, ugh.

You can do something like this:

The 2 sided line is 128 long, but the 3 one sided ones jutting out there are all 64 long. Those angled lines can be useful to help make not right angles and still make it easy to align textures.