I backstabbed the NPC with a regular blade strike (rapier) in the back, and it's model stretched intself across the terrain.
Here is how it looks like:

https://drive.google.com/file/d/1VN-EJ346VSvTn6RYIp6pUmi6UuOiSglK/view?usp=sharing

https://drive.google.com/file/d/1oHgNxYyGMYzV8a2pCh4gXwdJkAauJTEh/view?usp=sharing