I'm certain I could not raise a novel theological perspective on Chrstianity even if I devoted my entire life to it. But from what I can tell, killing is not a black stain that precludes you from salvation. God is good, and He is forgiving.
You have to seek forgiveness and truly understand the nature of your transgression against your fellow man, not be like "welp, collateral damage is just part of the job."
You have to seek forgiveness and truly understand the nature of your transgression against your fellow man, not be like "welp, collateral damage is just part of the job."