well k. if it is so

Unfortunately that would break the perk progression. It would have to alter the client, and there's no way to get new mutators whitelisted anymore.

Although, I guess it could be done with progress message. It would jump around the upper centre part of the screen, and it would be pretty annoying/distracting.

bruh
pls make it always show on the screen during the wave
at the top or down of the screen

Left it out because the game/server generates it when needed, but you can also do it manually.

Here's the default contents of the ZedKillCount.ini:
[ZedKillCount.ZedKillCount]
ThousandsSeparator=,
ZedKillCountMessage=Zed Kill Count:
ZedKillCountEntry=%name% %count% (%total%)
TextColour=(B=255,G=255,R=255,A=255)
HighlightColour=(B=0,G=0,R=255,A=255)

do not ZedKillCount.ini in ziparchive

:D