This isn't a console command nor a cheat code - this is editing the actual system configuration files of the game itself. If you follow the instructions, you should be fine, but you do so at your own risk, and the more you change, the more of a hassle it can be to change them back without having to reinstall the game.

Consider this a "last resort" for players who want to enjoy the puzzles and exploration of Haydee without needing to worry about headshot accuracy or ammo conservation.

This guide has been translated into English. Autonomous Combat System is the original creator of this guide and it's been reposted with their permission.

Step 1) Firstly, I strongly suggest you download Notepad++[notepad-plus-plus.org]. It's free, light, and has more use than normal Notepad. With this, we'll be able to edit the game's PACK files directly.

Make sure your Haydee is closed.

Step 2) In Notepad++, go FILE>OPEN and Open up the System.PACK file in Steam/steamapps/common/Haydee/packs

Step 3) Once you've opened the file, hit CTRL+F to open up the search function and search for the enemy types - Slasher and Walker. Underneath them, you'll see a "health" value amongst some other interesting numbers.
Step 4) Change the Walker's health from 200.0 to 001.0 and the Slasher's from 100.0 to 001.0. Make sure you keep the four-digit single-decimal number or the game will throw an error at you.

Step 5) FILE>SAVE and load up the game. Enemy robots will now die if Haydee so much as coughs in their general direction.