Doom Speed Demo Archive
https://dsdarchive.com/

Iwad:      doom.wad
Movie:     Episode 1
Skill:     4
Category:  UV Tyson
Exe:       dsda-doom 0.29.4 -complevel 3

Time:      20:53

Author:    Keykhosrau

Disclaimer: This is a Tool-Assisted Speedrun!!!!
Video: https://youtu.be/gSC1xH7AE1E

Times:
E1M1 - 0:39.91 / 0:39
E1M2 - 1:54.80 / 2:33
E1M3 - 2:59.66 / 5:32
E1M9 - 2:23.83 / 7:55
E1M4 - 1:57.17 / 9:52
E1M5 - 2:40.20 / 12:32
E1M6 - 3:40.51 / 16:12
E1M7 - 3:08.17 / 19:20
E1M8 - 1:33.29 / 20:53

Comments:  
I did the TAS Tyson movie again, but this time with 100% kills on E1M8! I wanted to get 100% kills because it would be irksome to see the analysis file keep saying it's not Tyson due to 63% kills yet E1M8's monsters not counting in speedruns. But, I'm doing a TAS, so it should be fine!
Such a shame though that the RNG wasn't RNG-ing with the barons, the barons took forever to start attacking eachother. I had some better attempts but I had to keep undoing them because I forgot to pick up the soulsphere, oops. :P 
The strategy here is to enter into the final box with 200 health/200 armor and hack at everything with the chainsaw. I also used a bright colormap to be able to see everything. I played at 5% speed and it honestly didn't take any time to beat!
You get the blue armor at very latest in E1M7, so I played a reality run inbetween then and the exit box, which costs a bit of time. The chainsaw can also be brought into E1M8.
The overall time is lower though because I was more familiar with the maps and also figuring out what loses time on a microscopic level, and that I had a reference point for what times I need to beat.

This demo was also recorded with the -chain_episodes parameter for future use, hope that's ok.