Board Thread:General Discussion/@comment-37750220-20181214063221/@comment-39394247-20190729072447

Terrace13 wrote: Oofoofoofoofoofoofoofoof wrote: But then, given how much damage you deal (enough to kill Undyne several thousand times over), isn't a "But it refused" likely? Undyne can’t “Refuse” death again after the Undying form. She tried when the player killed her in waterfall, but she just turned to dust.

Actually, she might not even go to her undying form at all if she was in sans place, since there’s noone left to protect after her but Asgore. That’s literally like, 1 person. And since she doesn’t know about the reset mechanic, she’ll think her people are lost forever, and lose her determination, allowing you to kill her with one blow, like mettaton NEO. Maybe she can though if Frisk is LV 19, and thus known to be a much greater threat to the world than anticipated at LV 10. If Frisk kills Undyne on a neutral route, the refusal does not happen. Alphys may have told her about the reset mechanic. Too bad she never gave Flowey a chance.