How to get Chapter 4 secret ending in Deltarune

Please be aware that as of the current date (June 6, 2025), Deltarune Chapters 3 and 4 have not yet been officially released by Toby Fox. The following information is based on the provided text, which appears to describe speculative or anticipated content for the unreleased Chapter 4. Proceed with caution, as this content may not reflect the final game.The journey through Deltarune Chapters 3 and 4 promises to be an extraordinary and deeply engaging experience, a true testament to the series' unique blend of narrative depth and unconventional gameplay mechanics. By this point in your adventure, it is presumed you have successfully navigated the challenges of Chapter 3, perhaps even uncovering its intriguing and elusive secret ending. Now, as the narrative unfolds and transitions into Chapter 4, players are met with a substantial amount of new territory to explore and mysteries to unravel.Fortunately, for those who might dread skill-based challenges, the path to this particular secret ending deviates significantly from high-stakes minigames or arduous, top-down dungeon crawls that demand pixel-perfect precision and rapid reflexes. Instead, your quest for this hidden conclusion will transform into an elaborate scavenger hunt, meticulously designed around the discovery of peculiar and enchanting musical symbols scattered throughout the Dark World.Major Spoilers for Deltarune Chapter 4 Ahead. If you wish to experience the chapter unspoiled, please exercise extreme caution and consider turning back now!

How to Solve Deltarune Chapter 4's Golden Piano Puzzle

Unlocking Deltarune Chapter 4's most elusive secret ending and confronting its formidable hidden boss necessitates a pilgrimage to the Dark Sanctuary, a pivotal location accessible shortly after the chapter's initialintroductory sequence. Within this enigmatic realm, your ultimateobjective is to locate a magnificent Golden Piano. To unlock its secrets, you are tasked with solving an intricate musical puzzle that involves discovering three distinct sets of musical symbols. These vital clues are discreetly hidden across several key locations:

• Behind the cascading waterfall situated near the very beginning of the primary area, offering a serene yet subtly concealed starting point for your hunt.
• Within a towering structure nestled in the lower right section of the Dark Sanctuary, specificallyto the immediate right of the Old Man’s personal library. This verticalexploration demands keen observation.
• Inside the curiously named “Jockington Grows the Beard” room, a location whose title alone suggests the whimsical and often perplexing nature of the Dark World's secrets.

Upon entering each of these designated areas, activating your light sourceand illuminating your surroundings will gradually reveal subtle, glowing arrows. These arrows are not merely decorative; theyserve as critical visual cues, representing the precise sequence ofnotes that must be played on the Golden Piano. Successfully discoveringand interpreting all three of these disparate music sets will provideyou with the exact and complete solution to the GoldenPiano’s complex puzzle. This accomplishment will, in turn, allow you touncover a crucial key item, an artifact that serves as your directconduit to the chapter's formidable secret boss. However, it isimperative to note that accessing some of these elevated or otherwiseinaccessible spots will require climbing gear.Consequently, you must first progress sufficiently through the chapter's main storyline until this indispensable tool is formally unlocked andbecomes available for your use.

How to Find Deltarune Chapter 4's Secret Boss

Once the intricate Golden Piano’s puzzle has been successfully decipheredand its harmonious secrets unveiled, you will witness a magical event: a hidden doorway will shimmer into existence directlybehind the enigmatic Old Man. Following this newfound path, you shouldretrace your steps, descending through the labyrinthine bookshelves andtraversing the library until you ultimately arrive in the study room.

Entering this particular room will trigger a captivating sequence of events, revealing a mystical magical axe. Ever impulsive, Susie will swiftly attempt to claim this formidableweapon, only to discover with a moment of surprise that she is unable to grasp it immediately. Following this initial interaction, a series ofincreasingly bizarre and perhaps even humorous interactions will unfold. Subsequently, Susie, now standing alone, will be transported into thedirect confrontation with the chapter's formidable secret boss. Overcoming this challenging adversary in combat will not only mark asignificant accomplishment but will also bestow upon you a pair ofinvaluable rewards: the powerful Justice Axe for Susie, an enhancement to her combat prowess, and another enigmatic Shadow Crystal, a recurring collectible item of deep significance within the Deltarune universe.

---

Other Articles Related

How To Get Ancient Chocolate in Deltarune
Learn the best strategies to find Ancient Chocolate in Deltarune. Ourdetailed guide will help you navigate the game 
How to Get Princess Ribbon in Deltarune
Unlock the secrets to getting the Princess Ribbon in Deltarune. Ourcomprehensive guide provides tips and strategies
How to Beat Giga Queen in Deltarune
 Master the strategies to defeat Giga Queen in Deltarune with our comprehensive guide. Tips, tricks, and tactics await! 
How to Beat Lanino and Elnina in Deltarune
 Unlock the secrets of SCUM with our guide to the best weapon locations. 
How To Get Pink Ribbon in Deltarune
Discover how to obtain the Pink Ribbon in Deltarune with our step-by-step guide. Unlock this essential item
How To Get White Ribbon in Deltarune
Discover how to obtain the White Ribbon in Deltarune with our step-by-step guide. Enhance your gameplay 
Where To Find Swatch in Deltarune
Discover the best locations to find Swatch in Deltarune. Uncover tips and tricks to enhance your gameplay experience!
How To Get the B.Shot Bowtie in Deltarune
Discover how to obtain the B.Shot Bowtie in Deltarune with our step-by-step guide. Unlock this unique item 
How to Get Dark Dollars in Deltarune
Discover effective strategies to earn Dark Dollars in Deltarune. Unlock tips and tricks to maximize your in-game currency today!
How to Find the Key Hidden Under Dinner Plates in Dining Room in Deltarune
Discover how to locate the hidden key under dinner plates in the dining room of Deltarune.
How To Use Walls to Your Advantage in Rematch
Discover strategies in  Rematch: How To Use Walls to Your Advantage  to enhance your gameplay and outsmart opponents.  
How To Beat the Nameless King in Elden Ring Nightreign
Master the art of defeating the Nameless King in Elden Ring Nightreign with our expert tips and strategies.
How To Get Boluses in Elden Ring Nightreign
Discover effective strategies to obtain boluses in Elden Ring Nightreign. 
How To Get Cord End in Elden Ring Nightreign
Discover the ultimate guide on how to get the Cord End in Elden Ring Nightreign.
Where To Find Jujubree in Clair Obscur Expedition 33
Discover the best locations to find Jujubree in the Clair Obscur Expedition 33. Uncover tips and strategies for a successful hunt!