My friend and I were kinda joking around and invented an idea for a new category, a Fargus% run where the goal is to get a game over by killing Fargus. Do you accept new categories here?

Considering it is a category that wouldn't finish the game and would be a joke, the answer wouldd probably be negative for leaderboards.

That said, nothing prevents you from doing it either way. You don't have to have a category in leaderboard to speedrun silly things :)