Wolfiexe's AYC guide: https://web.archive.org/web/20170313211829/http://www.speedrun.com/undertale/guide/f2wer

Rotompoison's Genocide guide: https://web.archive.org/web/20160716111912/http://www.speedrun.com/undertale/guide/hltaz

Rekyuu's Hard Mode guide: https://web.archive.org/web/20170313212101/http://www.speedrun.com/undertale/guide/ckmax

moose.hockey.63's linux setup guide: https://web.archive.org/web/20170313212152/http://www.speedrun.com/undertale/guide/o63e7

Yozam's Lab Skip guide: https://web.archive.org/web/20170313212235/http://www.speedrun.com/undertale/guide/1dpyg

Rotompoison's neutral guide: https://web.archive.org/web/20170313212454/http://www.speedrun.com/undertale/guide/utwm1

Yozam's TPE vid Guide: https://web.archive.org/web/20170313212612/http://www.speedrun.com/undertale/guide/fnu4p

Rekyuu's True Pacifist Route guide: https://web.archive.org/web/20170313212701/http://www.speedrun.com/undertale/guide/n31mk

Drakodan's Genocide Route Notes: https://docs.google.com/document/d/1inrqcUQYkBWS0EBdkbjxnoyr1wPLRng3nKgheh9AYq8/edit?usp=sharing

xandertje10's TPE Glitchless video guide:

DoubleADewi's Easier Onedyne Guide (Slower)

GarlicBox's How to Wrong Warp Consistently.

jdlinkmaster's Updated Neutral/TPE Video Tutorial

xandertje10's Video guide for Neutral/TPE First video

Playlist https://www.youtube.com/playlist?list=PLgWtFiVnUcc7jqXR4n4G1Q0o1lo5HY29g

early pan (bvc)

82 endings (asheevee) http:/​/​tinyurl.​com/​allendings

onedyne (jd)

Crazy Calv's NGNAG 2020 reroute guide: https://web.archive.org/web/20211120145547/https://www.speedrun.com/undertale/guide/b6ok0

Undertale General Speedrunning Text Guide (2021): A general guide for Undertale speedrunning. Route guides for all main categories are included, complete with the latest strats. https://docs.google.com/document/d/e/2PACX-1vSbtlfy6wLQxF_bkZD7hPXZCsnoq1KBPVsmaH3efIbTeBczo8fhZ5PD5Bfgd3w53QtnTG5OSmm1AwMr/pub