DETAILS:

The perk is located in the sneak skill tree (duh!) and it requires you to have at least 80 sneak attribute (Altough I am considering upping the requirements some people may consider this too op).
This is the perk id if you ever need it for some reason: 45000D62

INSTALLATION:

Unpack DeadlyHit.esp and move it in your Data folder then activate it from either the vanilla launcher or NMM.


Uninstallation:

Remove DeadlyHit.esp from your Data folder.