This is a very simple mod that replaces one of the vanilla death screams with the famous "Wilhelm scream" from various Hollywood movies. 

The Wilhelm Scream happens when an NPC dies, about 20% of the time. So one in every five deaths basically. I fixed the volume level and moved it to a 3D sound space, which is a fancy way of saying the Wilhelm will come from the direction the NPC died in, instead of sounding like it's inside your head. 

Also note, the scream has a random chance to happen when you die too. It's definitely good for a chuckle in an otherwise frustrating moment. Enjoy.