In particular, I'm curious about two fights - the initial fight against the Dummy that Toriel has you fight, and the first encounter with Napstablook.

To stay on track for this route, do I need to kill Napstablook...

Well, sort of - do I need to deplete his health? He can't actually be killed, rather you deplete his health and he leaves.

...and the dummy, or can I mercy these two for speedrun purposes?

2 Answers 2


No. Neither the dummy nor Napstablook count. It is faster to use Act->Talk on the dummy, and to grind all encounters in the three rock room before Napstablook: if you have already exhausted the encounters in RUINS by the time you meet Napstablook, he will simply fade away.

  • Apparently I was completely and utterly wrong the first time. This has been updated to reflect the reality
    – Unionhawk
    Commented May 2, 2016 at 21:37

you can just spare those two. fighting napstablook actually gets you negative EXP, as well as taking time, so he's better avoided.

  • If you "kill" Napstablook you lose an experience point. EXP is not that.
    – inakilbss
    Commented Jan 25, 2019 at 10:38

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