@Kurovah
Well, if the soul doesn't go to the after life, you can say that you've never killed a soul.
Even if your body count is incredibly high...
He hasn't killed a single soul, but he has killed his wife's parents.
So either they were soulless, or, like the uncle, they deeply enjoyed the benefit of the save point.
And that uncle is going to have PTSD when he sees that mask...