I've added a difficulty variable for those that choose to play on something other than Easy. This won't affect leaderboard placement, instead it's similar to the console variable.

Extreme categories are still likely to get their own leaderboard in the future, but we'd still need some decent proof-of-concept runs to consider it.

Could also add a character variable. At least that seems more relevant for NLM categories.

Added both difficulty and character variables. Updated the rules for Any% and Any% NLM to exclude Drizzt as an option for a playable character, as he's intended for NG+ type shenanigans.