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This page is part of a Genocide walkthrough for Undertale. It is recommended you complete a pacifist run first using our Pacifist Walkthrough if you want to experience all the endings.
This Walkthrough will take you through Undertale on a Genocide run. This requires you to not only kill every character you come across but to actively continue searching in areas until you've...
Episode 1: Meanwhile, in an Alternate Timeline [Note 1]If you don't want certain aspects of the plot spoiled for you, I would suggest watching each Genocide e...
The Genocide Route occurs when the protagonist kills every enemy (including mini, mid and main bosses) in every region: the Ruins, Snowdin Forest, Waterfall, and Hotland (the CORE is a sub-region of Hotland). Starting in the Ruins, the protagonist repeatedly triggers encounters to kill all monsters.
The Ruins, with a Kill Count of 20, start off the route with less of a bang and more of a honk of despair, introducing The Player to the tedium of grinding for kills.
1. Dark Ruins. Try to kill Decibat, as many Rorrims and Crispy Scrolls as possible for more EXP, don't exhaust the kill counter early. Reach the corn maze, make sure to retrieve the Pebble Ammo (+3 AT) by going around the maze and reaching the top left corner.
The ruins will be almost entirely empty. Continue through the three coloured button puzzle and, before you reach Toriel's house, continue right to find the toy knife. This will increase your ...
