Proposed ruleset:

• In any order, defeat: Tan, Floormaster, Bee, Cif (full), 0stRanger IF Lev and Mon.
• No Special Brands, except for 0stRanger.
• Time is tracked using a real-time timer.
• Time begins after obtaining the Void Rod.
• Time ends upon reaching an ending with your current character. See other categories for details.

That's how I've been doing runs at least. Another idea is to end the timer upon defeating the last boss of your choosing.

Added, thanks for writting out the specific rules. But im wondering if the timer shouldn't start upon inputting your brand, since you could do 0stranger first. You can still submit the run I would just add the 5-10 seconds the beginning part takes, if that sounds good.

Good catch, I'm fine with that. I timed the beginning from finishing the brand input to when IGT starts and it's around 30 seconds, so I'll add that.

Thanks!