Howdy. I think you have something there PCS.
This might be one of them lil buggers that surprise people on Steam
and start to get traction. Make it surprising, make it a little spooky and
mysterious. Otherwise, nice going.
Best thing also is it seems like, (and I HOPE!) GG Classic can handle simpler
levels like this. Making all the game into one level isn't a terrible idea--
I get the reason you want to do it.
At least with one level only, you don't have to script a save file for your weapons
and health, and so forth...
But hey, maybe you could probably add more than one level if for example
you come to a giant central room-- or go up on street level, and from there
select a few entrances-- just a thought.
Maybe even part of the game is on the street, maybe you get mugged! and
that's an excuse to start over without weapons... but don't let me get you (>GG)
to BREAK and end your game build- good luck.