SDA rules only allow Easy and Nightmare difficulties, I'm not going to make up new categories, sorry

To watch the run, unpack the .dz file with dzip, and the .pak file should contain all the demos (which is also openable with dzip). You can now watch these demos using joequake (simply use the 'demos' option in the menu).

As for recording these, I suggest using built in commands. More on that here: https://forum.speeddemosarchive.com/post/making_video_from_quake__is_there_a_tutorial.html

Dzip download link: http://quake.speeddemosarchive.com/dzip/ Joequake download link: http://quake.speeddemosarchive.com/quake/downloads/quake-large.zip (should also contain all the doe levels necessary to watch the demos)

I hope you can take it from here

if you're still looking for the answer, 55 and 47 are the max amount of kills in these levels. i suggest using joequake and doestats. they have these fixed (amount of enemies shows up correctly) download them here http://quake.speeddemosarchive.com/quake/