How does the game decide if I got the disintegration ray achivement?

[Foreman]

I want to make a mod that replaces the bio-beam on the Slug A ship but I still want getting the achievement possible, I saw another Mod that replaces the bio-beam on the slug A with another weapon that pieces all shields and does no damage but I was still able to get the achievement using that weapon, and both me and biohazard looked at the code for that mod and neither of us found anything that changes the requirements for that achievement and he suggested that mod exploit how the game actually checks if you got the achievement, so maybe the game checks if you kill 3 crew with one beam that does no hull damage. the weapon I want to make is going to do bio-damage and start fires and I'm not sure if the fire chance will make it not work.