Howdy!

This is a Tool-Assisted Speedrun (TAS), which means that this video was made in an emulator with save states and slow downs for a theoretically perfect run, for entertainment purpose.

Full category name: Genocide Ending.
Rerecords count: 22,587 + about 5k unofficially (that were spent for testing different routes that appear to be slower at the end, so I never saved them in movie file).
Time by speedrun.com rules (Real Time Attack method which starts at the name confirmation and ends at the final choice): 57:56.83.
Time by TASvideos.org rules (starts from the very beginning and ends after final input): 58:10.93.
Run's details: http://tasvideos.org/6634S.html

I planned to make this video a while ago, but making descriptions is hard. Meantime, I slightly optimized this run by taking notes from feedback of stream premiere, and now I really can say that I don't have any ideas, how this run possibly could be any faster.
I also added Kill Counter, so it should be easy for you to keep track on kill requirements.