Hello!

I checked out the categories for the speedrun of this game, and there was no solo% in there. I was thinking - from "The First Bomb" to "Blinkenlights 2" (or whatever it's called), with only the defuser. Don't know if you'd allow the use of the manual, or personal notes, up to you.

+1.

Considering how the leaderboards are set up, I think having just defuser or defuser and expert(s) in the same category is fine since that would require splitting every category into 2 categories, including levels and such.