How would I make it where you click to play an animation and it kills?

Like, I press a certain key and it kills the humanoid once you get to them kinda like I press a button behind them and it cracks their neck or something

EXAMPLE

I got behind someone with a linked sword, and then I stab them through their back (I have the animation for it)

Could I get help?

Please attempt to script this yourself first. This is, basically, a request, and Scripting Helpers is not a request site.

Some things to look into:

Animations Specifically, these three sections

Player:GetMouse Which gives you this With which you can use this