DELTARUNE - Horrorgrave

ALAS, TRHU THE POWER OF MY DETERMINATION, I, THE GREAT PAPYRUS HAS MENAGED TO WORK WITH THIS BROKEN CODE

What is the full guide on how to do this route?
Because I feel like I did everything right, and yet nothing besides the sprite changes was different.

I did let Susie attack everything, and I did fight every enemy I ran into (except for the Rabbicks on the way to Broken Key B on the first pass by that area), and I did have Susie use Rude Buster on every enemy I ran into after the elevator sequence (even backtracking to the beginning)

question, how do you do this? is there like a guide?

how do i activate the route cuz when i fight all enemy with violence and beat jevil and backtrack and i still cant kill