Finishing Darwin Village without killing diseased mutants?

[HexGramarye]

I'm really confused about the mission in Darwin Village. You're told not to kill any diseased mutants, and I'm hearing that people somehow got through the whole area without killing any. How? I'm not sure how that's possible or if I'm missing anything because on the first screen, you pick the lock on the gate, open the garage, and go down the hatch into the underground, right? Well, you also can't go through any doors in combat, and there's no way to end combat. I can't get to the gate without triggering combat. Am I supposed to go through the entire screen without getting caught? How am I supposed to do that? I spent about an hour trying to distract them with bombs and getting caught over and over again.
This post also seems to imply that a requirement to recruit Pizepi is to finish Darwin Village "without killing a single zombie." Is this true?
https://forums.inxile-entertainment.com/viewtopic.php?t=9449

[rkwipe]

You go through the back door after entering the basement, it require a high level computer expert to open. The mutants stop being hostile after you turn on the air condition system.

[red255]

the ones in the front of the place you can kill, its only the ones inside, which yeah as mentioned you go thru the locked doors the passcodes are around or you could get them from google.

scotchmo got me thru the last door with his high luck.

if you kill the ones inside pizepi can still be recruited, it just raises the CHA required.

[EolSunder]

Killing the outside-topside mutants doesn't count, kill them all on your way into the base.

once in the base, do the non-violent way and turn on the system. Everyone is peaceful now. Exit, claim your rewards, exit the base. Recruit Pizepi. Now dismiss Pizepi so she stays outside. Re-enter the base, kill everything inside. Loot and exit, pick Pizepi back up, and continue with the game.