Gaming

Deltarune 100% Walkthrough and Guides

Published on

July 14, 2026

Via Game RantWilliam Parks

Deltarune 100% Walkthrough and Guides

By William Parks

Updated Jul 14, 2026, 10:56 AM EDT

William Parks is a Game Rant editor who specializes in puzzle games, indie releases, Nintendo titles, and completion-focused guide coverage. Since joining Game Rant in 2019, he has written and edited thousands of guides, with much of his work centered on helping players solve specific problems, track down hidden items, and make sense of tricky progression systems.

Before writing about games full time, William worked in arts administration after graduating from the University of Southern California’s School of Cinematic Arts. In that role, he collaborated with curators, artists, and institutions on contemporary exhibitions, an experience that helped shape his careful, research-driven approach to guides. His writing is built around clear structure, close observation, and making complicated objectives easier to follow.

William is especially drawn to games that reward curiosity and experimentation. He approaches guide writing from the perspective of a completionist, with an emphasis on practical advice that gets players where they need to go without wasting their time.

Deltarune is divided into chapters, and each one is filled with missable items, secret bosses, puzzles, and more. With Chapter 5 scheduled to arrive on June 24, 2026, now is a great time to finish everything that's available in Chapters 1 through 4.

This guide hub collects all of our Deltarune walkthroughs and guides in one place. Players can use it to solve every puzzle, find every piece of equipment and collectible item, defeat every secret boss, and reach 100% completion.

100% Walkthroughs

Pixel-art Deltarune image showing Kris, Susie, and Ralsei in three vertical panels above the text "A HUMAN, A MONSTER, AND A PRINCE FROM THE DARK."

Players who want to clear every chapter without missing any major items, secrets, bosses, or optional tasks should use these full walkthroughs.

Getting Started

Start here if you need technical support or general guidance before working through the chapters.

Chapter 1 Guides

Chapter 1 is where Deltarune establishes its basic rhythm, with strange puzzles, unusual combat encounters, missable items, and an optional boss that is much harder than anything on the main path. The guides below cover the chapter's biggest sticking points, from puzzle solutions to Jevil and the Broken Keys.

Chapter 1 Walkthrough

Chapter 1 100% Walkthrough

Chapter 1 Bosses and Secret Bosses

Chapter 1 Puzzle Solutions

Chapter 1 Items

What to Do with the Glowshard

Chapter 2 Guides

Chapter 2 opens things up with a recruitment system, a secondary route, and another secret boss. This is where players really need to think about branching content, as a normal playthrough and a Weird Route run cover very different ground.

Chapter 2 Walkthrough and Routes

Chapter 2 Bosses and Secret Bosses

Chapter 2 Puzzle Solutions

Chapter 2 Items

Chapter 3 Guides

Chapter 3 turns Deltarune into a game show, complete with rankings, minigames, and rewards that are easy to miss. The guides below focus on TV Time as well as secret bosses, secret items, and optional content.

Chapter 3 Walkthrough and TV Time

Chapter 3 Bosses and Secret Bosses

Chapter 3 Puzzle Solutions, Codes, and Minigames

Chapter 3 Items and Rewards

Chapter 3 Secrets and Endings

Chapter 4 Guides

Chapter 4 shifts away from TV Time and into a darker mix of exploration, puzzles, and secret bosses. The guides below cover its major detours, optional encounters, hidden rewards, and route-specific content.

Chapter 4 Walkthrough and Routes

Chapter 4 Bosses and Secret Bosses

Chapter 4 Puzzles, Codes, and Secrets

Chapter 4 Items and Rewards

Chapter 5 Guides

Chapter 5 primarily takes place in the Flower Kingdom. The following guides detail its puzzles, bosses, secrets, and more, and they will help players reach 100% completion.

Chapter 5 Walkthrough and Routes

Chapter 5 Bosses and Secret Bosses

Chapter 5 Puzzles, Mechanics, Collectibles, and Secrets

Chapter 5 Items and Rewards

Other Secrets and Collectibles

Lore and Character Guides

Kris, Susie, and Ralsei Age Theories

RPG

Systems

OpenCritic Reviews: Top Critic Avg: 86/100 Critics Rec: 83%

Released: October 31, 2018
ESRB: Teen / Language, Suggestive Themes, Mild Blood, Fantasy Violence
Developer(s): Toby Fox
Publisher(s): Toby Fox

10 Images

Genre(s): RPG

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