Patsu you're killing me here! I added the xbd-level spoiler tags. Hopefully the choices branch naturally and I don't have to now be overthinking engagements.
Sorry bud, I made a judgment call. Getting you to think twice about killing special people and monsters does not sound like a bad idea, compared to missing out some treasures or quests. ^_^
The game has a lot of depth and side "stories" (Demon's Souls style). Enjoy !