For the rule about having to have audio in top 5 runs, does that mean I have to have a microphone or just the game audio?

First, no, Figure does not have eyes, and Second, I am not sure, but Figure has been glitching a lot for me, even crawling over the desk and the banister

It will probably just be called "The Basement"

There arent much mods and lots of categories for this game so runs take a while to get verified or denied

Unfortunately, it is possible to not get a seek in your run, and it has happened twice to one of my friends.

The rules specify for every single game that shaders are NOT allowed

I'd say just use a light and get used to some of the dark room layouts. Once you do enough runs the rooms almost get drilled into your head