How to get Chapter 4 secret ending in Deltarune

Deltarune Chapters 3 and 4 are a wild ride. By now, you've likely completed Chapter 3 and maybe even experienced its secret ending. Now, we're on to Chapter 4, and oh boy, there's a lot of ground to cover here. Fortunately, you won't need to worry about ranking high in goofy minigames or beating impossible top-down dungeon crawlers to find this ending. Instead, we're going on a scavenger hunt for special musical symbols. There are major spoilers for Deltarune Chapter 4 below. If you haven't played through the chapter yet, proceed with caution! How to solve Deltarune Chapter 4's Golden Piano puzzle Finding Deltarune's Chapter 4 secret ending and boss requires entering the Dark Sanctuary after the chapter's introduction and finding a Golden Piano. You'll need to solve the Golden Piano's puzzle by finding three sets of musical symbols. You can find these symbols in the following locations: Behind the waterfall near the beginning of the area. Inside a tower in the Dark Sanctuary's lower right section (right of the Old Man's library.) Inside the "Jockington Grows the Beard" room. Entering each area and lighting up your surroundings will reveal arrows you play during the Golden Piano's puzzle. Finding all three of these music sets will give you the exact solution to the Golden Piano's puzzle, letting you uncover a key item that'll lead you directly to the secret boss. However, you'll need climbing gear to access these spots, requiring you to progress through the story until you unlock this tool. How to find Deltarune Chapter 4's secret boss Once you solve the Golden Piano's puzzle, you'll watch a doorway appear behind the Old Man. Head back down the bookshelves and traverse through the library until you arrive in the study room. Entering this room will reveal a magical axe that Susie quickly attempts to take, only to realize she can't grab it just yet. After a series of bizarre interactions, she, alone, will enter the secret boss fight. Beating the boss will reward you with the Justice Axe for Susie and another Shadow Crystal. This article is being updated over time as more information is revealed. The post How to get Chapter 4 secret ending in Deltarune appeared first on Destructoid.

Jun 5, 2025 - 19:14
 0
How to get Chapter 4 secret ending in Deltarune

Deltarune characters in Chapter 4's Dark Sanctuary

Deltarune Chapters 3 and 4 are a wild ride. By now, you've likely completed Chapter 3 and maybe even experienced its secret ending. Now, we're on to Chapter 4, and oh boy, there's a lot of ground to cover here.

Fortunately, you won't need to worry about ranking high in goofy minigames or beating impossible top-down dungeon crawlers to find this ending. Instead, we're going on a scavenger hunt for special musical symbols.

There are major spoilers for Deltarune Chapter 4 below. If you haven't played through the chapter yet, proceed with caution!

How to solve Deltarune Chapter 4's Golden Piano puzzle

Finding Deltarune's Chapter 4 secret ending and boss requires entering the Dark Sanctuary after the chapter's introduction and finding a Golden Piano. You'll need to solve the Golden Piano's puzzle by finding three sets of musical symbols. You can find these symbols in the following locations:

  1. Behind the waterfall near the beginning of the area.
  2. Inside a tower in the Dark Sanctuary's lower right section (right of the Old Man's library.)
  3. Inside the "Jockington Grows the Beard" room.

Entering each area and lighting up your surroundings will reveal arrows you play during the Golden Piano's puzzle. Finding all three of these music sets will give you the exact solution to the Golden Piano's puzzle, letting you uncover a key item that'll lead you directly to the secret boss. However, you'll need climbing gear to access these spots, requiring you to progress through the story until you unlock this tool.

How to find Deltarune Chapter 4's secret boss

Once you solve the Golden Piano's puzzle, you'll watch a doorway appear behind the Old Man. Head back down the bookshelves and traverse through the library until you arrive in the study room. Entering this room will reveal a magical axe that Susie quickly attempts to take, only to realize she can't grab it just yet.

After a series of bizarre interactions, she, alone, will enter the secret boss fight. Beating the boss will reward you with the Justice Axe for Susie and another Shadow Crystal.

This article is being updated over time as more information is revealed.

The post How to get Chapter 4 secret ending in Deltarune appeared first on Destructoid.