K so most likely you're not doing this route as your first route, or even second.
Just give yourself a minute to think about why you're doing this. Are you done?
So now I will be giving examples of vital items you will and will not need to start a genocide route.

What you will NOT need:



A soul



What you WILL need:


Patience

So by now you have killed some of your favorite characters from pacifist/neautral route and you don't really want to go on, but you've worked this far. You might have named your human something embarassing for genocide route, and you want to do a true reset to replay a better, easier route. So the fact that if you kill all your friends, you can finish this route and replay another one, change your name, find secrets, and...! Oh yeah, so you probably have determination about finishing, well not anymore! You're ♥♥♥♥♥♥ stuck at the Undyne's FINAL FORM'S boss fight! What? Do I have any tips on this boss fight HUEHUEHUEHUEHUEHUEHUEHUEHUEHUEHEHUEHUEHUE YOUR NOT GETTING PAST HER. Okay so becasue of that, that THNG I have got unnatural male-pattern-baldness and half a couch.

♥♥♥♥♥♥♥♥ UNDYNE

Oh look! Wow you're good! You beat Undyne and every other boss fight.... before Sas- S-sansssssssss..... OH GOD HE'S COMING. LOOK YOU GOTTA HIDE RIGHT NOW! OR IF YOU HAVE FEELINGS PLEASE JUST RESET! IT'S FOR YOUR OWN GOOD! DON'T FIGHT HIM!!!!


Oh I see how it is. You're determined. Well go ahead and have a ♥♥♥♥♥♥ up time trying to beat him.

YOU'RE
GONNA
HAVE
A
BAD
TIME

THIS SECTION GOT DELETED BECAUSE I ACCIDENATLLY CLOSED IT SO DON'T EXCPECT AN ESSAY.
MATERIALS TO CLEANSE YOURSELF FROM THESE SINS:

1. Holy water

CHUG IT

2. A crucifix

SPIRITS BE GONE

3. An excorsism







K so anyway why the hell did you read this gtfo