Yep. More commonly known as PiX. I think he started as a modder? (which reflects in his mapping style too). Also made this map: https://forums.tripwireinteractive.com/index.php?threads/kf-oldetower-beta3.47772/

Looking at this page I mb have a little attitude lol, think I was in my 'sdk is making my life miserable' phase. I'll update this page with the appropriate twi forum link too...
The beta map has a goofy feature where you can technically win with a broken camera (fixed on laptop screen) if a spectator guides you through the corridors to the machine. So for peeps that hate this upload feel free to try finish the og kfo map that way

This is surprisingly good. I never heard about this PixelScope guy but I hope he found a way to monetize that talent.

I played the beta of this mission and there was a bug: where you need to hold out until the door opens, for some reason the camera takes somewhere to the side and further passage is impossible. The ending is broken, of course, but still well done for fixing it.

I would if I knew how and played the original map when it was still working before the new patches broke the map to know how the map was meant to be played as is intended by the original author....

It's possible but not something I can be arsed with. Feel free to edit the map yourself and convert it into a pat fight for your own servers or whatever.

is it possible to get original boss fight that would still allow game progression?

Idk, sometimes some weapons don't work but It's a giant door, with more moving door bits attached to it. Explosives should always work on a KF Door, oh and it has a 'weak point' in the middle.
I scaled down the spawns a bit and added that clue into the boss room ages ago anyway.
(Reposted this comment to remove an old dl link so don't mind me)

what is this custom boss fight you speak of?

So how do you defeat the Machine?

I was shooting at it but wasn't doing anything. Custom spawns also seems crazy since their are so many zeds in such a little space

Nice work then. No players working with kfo maps, so if u want to did it playable, did it youreself.

Yep, it was fairly simple. He set up a scripted trigger that changed player viewtarget to the computer screen after a given Event.
I suspect the custom boss fight afterwards would cause a lot of grief so I just added in some extra zed spawns, pickups and left it mostly as is.

Cool. U did that fix?