How many speedrunners or submitted runs there has to be? or can i submit and have my run by itself?

also, does only the true ending count? i dont see any alternative ending submissions

Sorry i quiet don't understand your first question mate. A run is a run, if you did one, you post it for a verification you just have to make sure you timed it according to the rules and put the right categories while submitting.

True ending is the fastest route other count but they're slower.

well someone told me there has to be 4 submissions for a new category to open (regarding other game -DOOM 2016-) i prefer the second ending but i couldnt find any so i thought they wouldnt be valid. i also possibly die in the true ending so i wasnt sure thats ok either :D thanks. submitting my runs now :)