It has come to my attention that in some levels it is actually impossible to achieve 100% secrets, because the devs forgot to flag some of these areas as secrets. Instead, you are only required to get all possible secrets for the given level.
For reference, I used this thread on the Doomworld forums: https://www.doomworld.com/forum/topic/110362-new-doom-64-speedrunning-category-wmd-max/ and I believe this is a solid ruleset to follow with the exception of one. Including the "fun" levels as part of the category would require use of the features menu, which adds in some unnecessary tedium to the run. It essentially turns it into a series of ILs once you beat The Absolution, since they're all pistol start using this method.
I'll leave this open for discussion, but for now, if a level cannot be accessed through gameplay, it is not required for a valid Max% run.
To the moderators of this game,
Now that the game has been released alongside Doom Eternal, runners will have the opportunity to learn the game on their platform of choice. Unfortunately, due to the amount of tricks that can only be executed on the original hardware, runners of the new 2020 port are at a severe disadvantage. For instance, in "Watch Your Step" N64 runners can completely skip a fight with a horde of enemies including a Cyberdemon simply by using the SSG clip right at the exit gate. To make things fair, please separate the leaderboards so that those of us running on the new port don't have to remain at the bottom because of tricks we can't perform.
Thank you for your consideration and for your time.
edit: I may have worded things to sound like I am requesting a completely separate board when I meant that there should be new categories within this board instead.