So I noticed that the rules seems to be broad and empty. (regarding difficulty settings, and timer) And I noticed in max%, there is nothing stated about difficulty played because each difficulty has a different amount of kills required. Will there be any changes regarding those concerns?

P.S, any plans on adding demos and dlcs to this game?

Difficulty subcategories is something to be added, sure. This leaderboard was created merely because there were like couple of people wanting to upload their runs. I'll be adding Individual levels, coop and so on when I get time. What DLCs are you talking about? Also what about demos? Like in-game demos? Or you mean just having individual levels? If you want to upload a demo to accompany your submission - go for it, just nobody has been doing that in any game so far, so we never bothered. This LB is kind of really low priority right now, but we'll get it sorted out eventually.

The dlcs I meant are lotb and jotn. The demos I was talking about are the short levels Croteam created (Karnak Demo and Palenque Valley)

How's addition of rules and other categories going? Really want to do some runs, have to use Fusion because regular BFE runs not so great on my PC whire recording

I can tell you now that whichever baseline categories are in TFE/TSE HD and BFE - they will be here. Unfortunately I can't spend much time on leaderboards moderation now, so can't tell when I'll add those, but following those rulesets will likely still end up being a valid run.

Okie, good to hear, thanks for so quick answer, will wait patiently. I could help you with adding those categories in here if you want and if it is possible - I've been "building" game pages here from scratch before and have more or less enough free time nowadays :D