Starter / General Guide for Unwavering Soul - 12.3
Apple Sandwich Man's version 12.3 starter. Chapters run from level 0 through Snowdin, Waterfall, Hotland, and Ruins chests, Yellow Flowey, Twisted Flower, Disbelief Papyrus, XGaster, the Infinite Realm, the Other World, Castle Town, Hardcore XGaster, Strongy Sans, a 200 TP grind, C.O.D.E, and the reset boss rush. The description says it is a recommendation for the first reset, not an optimal route. The Roblox description now says 12.4.
Watch on YouTubeUnwavering soul 12.3: UNDERTALE YELLOW FLOWEY FULL GUIDE
The chill man's version 12.3 Yellow Flowey lesson. Chapters cover phase one, phase two, and the reward. The description treats the fight as a reset-0 encounter and says the weapon is optional if your gear is already stronger.
Watch on YouTubeHow Farm Resets in Unwavering Soul | Full Guide
callme_1z4n's reset-farm video for Unwavering Soul. The description says it is a simple beginner reset farm. A top comment lists Large XP capsule, AMOGUS to 1600, Undyne Ultra to 3250, OOF Head to 4900, Hyper Dust, Outertale, then a TP boss and the reset.
Watch on YouTubeHelp From The Void Guide - Unwavering Soul 12.0
Apple Sandwich Man's version 12.0 Help From The Void fight. Chapters move through location, loadout, and phases for Papyrus, Sans, Gaster, and phase two of the encounter. The description links a player-help Discord and a Rift Essence card. It does not print the numeric entry cost.
Watch on YouTubePete n VB Guide - Unwavering Soul 12.3
Apple Sandwich Man's version 12.3 Pete n VB lesson, with chapters for location, loadout, and the battle. The creator later noted that items do work in the fight. The recording is described as old, with the claim that the fight itself had not changed.
Watch on YouTubeDELTAWOW Guide - Unwavering Soul 11.0
Apple Sandwich Man's version 11.0 DELTAWOW lesson. Chapters cover Bravery Gauntlets, the location, the loadout, and the phases. The description says the fight did not need a guide. A later comment from the creator tells players to spend money at the delta shrine. This is an older version than 12.4.
Watch on YouTubeUnwavering Soul 11.2 Update Guide
Apple Sandwich Man's version 11.2 update guide. A pinned-style creator comment on that video says Error Sans became reset 2, and discusses island value for dark jars. Use it as history for the 11.2 change, not as a 12.4 patch note.
Watch on YouTube