Board Thread:Fun and Games/@comment-3271485-20160623060650/@comment-27701762-20160623081854

Not to burst your bubble or anything, but so far what you've described isn't something special to completing a near-Genocide playthrough. Those lines of dialogue, and plenty of others, occur under a variety of circumstances related to having already met with the characters (or performing certain actions, such as befriending or killing them). That Papyrus scene, for instance, is related to having already done that particular scene before, regardless of how the scene played out before (unless there is some particular way in which the rest of the dialogue plays out, but to my knowledge there is no difference).