How to Kill Sans | Undertale - Genocide Guide

Here you go: a comprehensive guide on tips and strategies for defeating sans in Undertale! If you, like many, have struggled with the final showdown against sans, this video aims to teach you some of the finer details to mastering his many attacks.

A lot of the fight is memorising patterns and attacks, and this video will help you do just that! Hopefully when you follow this guide, you won't have a bad time!

If this video helped you at all, be sure to let us know in the comments below! :)

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[NosBos--]

If you "act" then click "check" on "Sans, " it'll say Sans' stats then it'll say "just keeping attacking. He can't dodge forever." And I like to think that if sans checked us, it'd say "just keep dodging. They can't attack forever."

[officialmalachite]

“You’ll need to press all four arrow keys at once.”
Me playing on Switch:

[awesomesauce]

Friend on phone: What are you doing?
Me: Doing homework.
Friend on phone: Awe...which subject?
Me: Killing sans.

[vaijayanthinistala]

I haven't seen anyone else mention this so I thought I would. So, I realized that Sans is using what Papyrus wrote about his spaghetti : "You'll be so busy eating it, you won't realize that you aren't progressing". Whenever we heal ourselves with items, we waste a turn by not attacking and, thus, not progressing the battle. Sorry, if this was obvious to some of you. I thought it was a cool little detail :)

[vihntage]

How I beat sans...
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.
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I didn't, because can't even get through Undyne the Undying

[shroomie]

You know, just imagine how Asgore feels. He's just casually watering his golden flowers, with not a care in the world. Suddenly, he hears someone summoning their magic, with a bunch of blasting sounds. He must then realize that there is a human, and he will need to prepare. But he can't move. He just sits there, frozen, listening to the sounds of the battle a few rooms over. He hears a scream, and a few minutes later, the human comes to greet him.

[sabotajxd]

Sans, the only boss fight that legit forces you to time your button presses in the *MENU!*

[alperdd]

I literally just came to see how long that last gaster blaster attack lasted ;p

[TheCanary.]

“Unless you want to watch a hilarious cutscene”

Me: yeah... “hilarious cutscene “.

[pomegranate]

Instant noodles standards:

Genocide: 90 Hp

Non genocide: 4 hp

[MononobeNoFuton]

Been training for a while and the closest I've gotten was the last attack with the circle gaster blasters

update : I DID IT!

[cares]

Me: I defeated undyne.

*SANS: Hold my beer*

[GlutzahnLP]

a tip for switch players, you have a joystick and directional buttons, use them. For attacks where you have to move your soul more freely use the stick and for attacks with small controlled jumps use controlled button presses, that way you won't drift into the bones. And never ever use a drifting joycon ;)

[sharkgamer]

This helped a lot! I didn’t beat him yet but I got to the part where he mentions his special attack for the first time

[ThyLordTea]

"How to Kill Sans" Just become a master at the game and then watch a video after rage quitting for 3 days.

[yousifalbofradi]

*how to kill sans*





Sans: wait that’s illegal

[justinmyfeels]

“Hit or miss”
“I guess you always miss huh?”

[AmnaAleem]

"The three stages of beating sans"

Before beating sans: hah! 1HP, this will be easy!

During fight: aaaa!!! How is he so fast? how am I suppose to beat him?!?!

After fight: what have I done?!?! I've killed sans! What was I thinking, Oh No! I gotta go back!

[owshee]

*Imagine if frisk just slashed horizontally*

[trusttaleiscool]

How to kill sans
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Drink a bottle of ketchup in front of him