PART 2 HERE ►►    • Undertale  All Differences in a Geno...  
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*Undyne the Undying fight at 12:30 , sans fight at 37:20 *

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This is a condensed video of every major (and a few minor) differences I could find between a normal/pacifist run and a Genocide run. Genocide run consists of killing every boss, event, and random enemy until there are no more enemies left in an area. Doing this makes most of the bosses die in one hit. However, 2 of the bosses (sans and Undyne) become MUCH more powerful and are the hardest bosses in the game. This run is also occasionally referred to as a No Mercy or Merciless run.

Undertale, a game by Toby Fox, is an RPG with bullet hell elements. It is a unique game in that you can play the game from beginning to end without killing a single enemy and characters inside the game remember what you did if you choose to reload a save and will call you out for it.


TobyFox, the creator, tweeted about my attempts at beating Sans live on stream:   / 644342971438080001  

See a VOD of that livestream here (warning, it's about 5 hours of sans attempts):    • 5 hours of sans attempts  

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