Having a hard time implementing a 3D characters animation that I am making in Blender

Hello everyone, beginner with this game engine!

So basically I have a gory scene (halfway done because I don’t know how to continue it) that I animated in Blender which is about a zombie that kills a human in a gruesome way.

Basically the zombie will tear off a human’s stomach and will pull out organs and intestines. I am using Godot by the way, and my plan is to export an animated character scene from Blender to Godot. Now I am asking myself:

1. How would I implement blood inside of a human’s body? Like when the human gets injured by the zombie, I want it to gush blood. Do I fill blood fluid simulation inside of the whole human 3D model? I was thinking this is the way, but it would be impractical maybe because of performance.
2. How would I make the body of a human damageable when the zombie is about to harm it? Like how to make it so that when the zombie’s hands come in contact, the skin/flesh gets ripped apart? Making a cloth simulation of a certain area on a human’s stomach part?
3. How would I implement the organs and intestines when the zombie pulls them out? Do I have model them inside of a human’s body? It seems like a complex thing to achieve, because the human will also have complex animations. Also how would I make it so that the zombie is able to pull out the organs once it opened the stomach?