The universe however doesn't care about souls (rescued or not).
In other words, you can very much kill your way to power and then be fine (as to "how you sleep") with it.
Even more, unless you overdo it like Hitler or Stalin, you can have other people (heck, history itself) be fine with it, and celebrate you as a great leader, a beautiful soul, etc...
In other words, you can’t kill your way to power and then give away money to rescue your soul.