Don´t bother in using Dead Silence, you dont need it. Since they can run back from you and can´t here ANYTHING! , i dont have awareness already, but its imposible to here a footstep on this game.
This happened at launch with BO1. Couldn't hear any footsteps but your own for the first little while and they had to patch it.
That's no big deal, one of my friends Is deaf, he can't hear at all and regularly tears people apart in COD. Relying on these types of tools only puts you at a bigger disadvantage when you've not got them.
I dont have a headset, and i even see deathcams people chasing me for years right behind me running and not even able to listen to them it just WRONG!