Ultimate Deltarune Chapter 3 Guide - Walkthrough & Tips
Dive into our complete Deltarune Chapter 3 guide featuring detailed walkthroughs, hidden secrets, boss strategies, and expert tips to help you conquer every challenge.
Watch the Full Deltarune Chapter 3 Walkthrough (4.5 Hours)
Watch the entire Deltarune Chapter 3 Guide in this complete 4.5-hour video walkthrough. Includes all cutscenes, puzzles, boss fights, and hidden content.
Deltarune Chapter 3 Guides
Deltarune Chapter 3 Guide - Round 1 Step-by-Step Walkthrough
Deltarune Chapter 3 Guide - Round 2 Step-by-Step Walkthrough
Deltarune Chapter 3 Guide - How to Get the Ice Key in Round 1
Deltarune Chapter 3 Guide - How to Get the Shadow Crystal
Deltarune Chapter 3 Guide - How I Found and Beat the Roaring Knight Secret Boss
Deltarune Chapter 4 Guide - How I Beat the Secret Boss - Hammer of Justice
Why Choose the Deltarune Chapter 3 Guide
Comprehensive Walkthrough
Discover everything in our Deltarune Chapter 3 Guide — from story tips to secret areas, boss strategies, and more. All the help you need in one place.
Verified Secrets & Easter Eggs
Uncover hidden paths, secret endings, and items like the Ice Key and Shadow Mantle with our Deltarune Chapter 3 Guide.
Boss Strategies
Beat Tenna, the Roaring Knight, and more with our Deltarune Chapter 3 Guide's expert boss strategies.
Interactive Content
Watch our full 4.5-hour Deltarune Chapter 3 Guide video, complete with commentary, puzzle solutions, and timing tips.
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All Boss Fights in Deltarune Chapter 3 Guide
Lanino & Elnina
In this Deltarune Chapter 3 guide, we cover an early dual boss fight featuring alternating attack patterns. Focus your attacks on one enemy to minimize overall damage. Watch out for their combo strikes and make sure to keep healing items ready in case of emergencies.
Tenna (First Battle)
This Deltarune Chapter 3 guide covers a TV-themed boss set in a chaotic game show arena. Pay close attention to visual cues during rhythm-based attacks and sync your moves with the music. Prioritize defense, and use healing items between mini-games to stay alive.
Rouxls Kaard
In this Deltarune Chapter 3 guide, you'll face a returning enemy with puzzle-based and deceptive attacks. Stay alert for fake-outs and erratic patterns. Use guard commands to reduce damage, and strike only when safe—patience is crucial for winning this fight.
Secret Boss: Roaring Knight
In this deltarune chapter 3 guide, we cover the toughest battle of the chapter. First, earn S-ranks on all minigame boards and collect the required Keys. Defeat the Shadow Mantle mini-boss to unlock powerful gear. Equip the Shadow Mantle on Susie, letting her lead with Rude Buster while Kris and Ralsei focus on defense and healing.
Tenna (Final Boss)
In this deltarune chapter 3 guide, we break down the boss's second encounter featuring faster, more intricate attack patterns. Use cues from the earlier fight to anticipate moves. Keep plenty of healing and TP items ready. Focus on defense, and strike only when clear openings appear to ensure survival.
Roaring Knight (Ending)
In this deltarune chapter 3 guide, we cover the story-heavy final battle that unfolds near the ending. Typically unwinnable unless you've met all secret boss conditions. Focus on surviving each phase to unlock the full ending sequence and narrative payoff.
Healing Is Crucial
Our Deltarune Chapter 3 Guide recommends bringing Spincakes, Club Sandwiches, and ReviveMints—healing items are key to surviving big battles.
Learn Patterns
In our Deltarune Chapter 3 Guide, we highlight how bosses signal their moves—watch closely and learn patterns to win easier.
Defensive Play
In the Deltarune Chapter 3 Guide, we recommend playing defensively against the Roaring Knight—wait for safe openings before attacking.
Special Items
The Shadow Mantle is mandatory for the secret boss—don't attempt without it. Special items can significantly change battle dynamics.
Where to Find Hidden Secrets & Easter Eggs in Deltarune Chapter 3 Guide
Deltarune Chapter 3 Guide is filled with secrets, Easter eggs, and rare items. From the mysterious Egg to gear for hidden bosses, explore off the path to find every reward.
Many secrets in Deltarune Chapter 3 Guide demand patience, careful exploration, and trying unusual actions like backtracking or picking strange dialogue choices. If you want to complete everything, be thorough and interact with every object and NPC. The best rewards often hide where you least expect them.
The Egg - The Ultimate Easter Egg in Deltarune Chapter 3 Guide
The most mysterious collectible in Deltarune returns in Chapter 3. Finding it requires completing an extensive sequence of actions:
- Complete all TV quizzes to unlock a secret door
- Play through the block-throwing minigame (use Susie to toss a block across the river)
- Enter the Green Room and interact with an NPC who accuses you of cheating
- Choose dialogue options: "Cheater" and "Nowhere" to be transported to a new area
- Cross the bridge in "Nowhere" and press the button to proceed
- Find the NPC in front of the big screen and talk repeatedly until a wardrobe appears
- Get the Trip Ticket from the wardrobe and take it to Goulden Sam
- Inspect the closed dumpster to find a hidden Ribbick
- During the Ribbick battle, use the ACT menu and press the left arrow key
- On the Forgotten Isle, speak to the cloaked figure and answer all questions correctly
Where to Use:
Place the Egg on a desk in Berdley's classroom. Like in previous chapters, it's a collectible with no known gameplay use but significant lore implications.
The Ice Key, Shelter Key, and Shadow Mantle in Deltarune Chapter 3 Guide
These items are essential for unlocking the secret boss and accessing hidden areas:
Ice Key
To get the Ice Key in the Deltarune Chapter 3 Guide, earn S-rank on the first minigame in the Green Room. Upgrade your sword, cut cacti and trees, and explore hidden spots to find the Ice Key.
Shelter Key
In the Deltarune Chapter 3 Guide, use the Ice Key to unlock a door in the white land area of the second minigame. Then, go to the temple with the Delta Rune symbol to find the hidden Shelter Key.
Shadow Mantle
According to the Deltarune Chapter 3 Guide, after unlocking the shelter with the Shelter Key, defeat the Shadow Mantle mini-boss to get the special armor needed for the secret boss fight.
Secret Boss - The Roaring Knight in Deltarune Chapter 3 Guide
How to Access:
- Collect the Ice Key, Shelter Key, and Shadow Mantle
- Equip the Shadow Mantle (preferably on Susie)
- Reload your save after defeating Tenna
- You'll now trigger the Roaring Knight secret boss fight
- Defeat the boss by dealing 25% of its HP
Rewards:
- Shadow Crystal (key item for the series)
- Black Shard (powerful weapon for Kris)
- Alternate cutscenes and dialogue
- Secret ending that may impact future chapters
| Secret/Easter Egg | How to Find | Effect/Reward |
|---|---|---|
| Out-of-Bounds Areas | Experiment in minigames, look for hidden paths and destroyable objects | Access to keys and other secrets |
| Egg Placement | Place in Berdley's class or other chapter locations | Unique dialogue, lore implications |
| Hidden NPCs | Check suspicious walls, bushes, or environmental elements | Unique dialogue, hints, or items |
| Repeated Interactions | Talk to NPCs multiple times or use unusual dialogue options | Extra jokes, references, hidden scenes |
Deltarune Chapter 3 Guide FAQ
What is Deltarune Chapter 3?
Deltarune Chapter 3 Guide covers the latest installment of Toby Fox's RPG series, following Kris, Susie, and Ralsei in a TV-themed Dark World. Available on PC, Mac, Nintendo Switch, PlayStation, and Switch 2, it's bundled with Chapter 4 as a paid package.
How to unlock the secret boss (Roaring Knight) in the Deltarune Chapter 3 Guide?
Step 1: Achieve S-rank on both the first and second minigame boards in the Green Room.
Step 2: Collect the Ice Key (from the first S-rank room) and the Shelter Key (from the second S-rank room, after using the Ice Key).
Step 3: Use the Shelter Key to access the shelter, defeat the Shadow Mantle boss, and equip the Shadow Mantle armor (preferably on Susie).
Step 4: After defeating Tenna, reload your save to trigger the Roaring Knight secret boss fight.
What is the Shadow Mantle and why is it important in the Deltarune Chapter 3 Guide?
The Deltarune Chapter 3 Guide explains that the Shadow Mantle is a special armor earned by defeating the Shadow Mantle boss in the shelter. It's essential to survive the Roaring Knight's attacks—equip it before the secret boss fight to avoid instant defeat.
How to earn S-rank in Tenna's game show in the Deltarune Chapter 3 Guide?
The Deltarune Chapter 3 Guide advises answering quiz questions quickly and accurately. More correct answers raise your score, helping you earn S-rank to unlock special minigame rooms and key items for secret content. Quiz questions can vary each playthrough, so recall details from earlier chapters.
What are the parental lock codes in the Deltarune Chapter 3 Guide?
First code: 213
Second code: 1225
These are needed to progress past certain doors in Tenna's area. You can solve the puzzles or use these codes directly.
What notable secrets and Easter eggs can you find in the Deltarune Chapter 3 Guide?
Hidden rooms and out-of-bounds areas: Cutting down trees or exploring unusual paths in minigames can reveal secret items like the Ice Key.
Quiz and minigame mastery: High scores unlock special rooms and story content.
Lore items: The Egg returns as a collectible, and placing it in various locations triggers unique dialogue.
What if I want to see all endings?
The Deltarune Chapter 3 Guide explains that to unlock the alternate ending, you must earn S-rank, gather all key items, and defeat the secret boss. Otherwise, you'll get the standard ending.
Tip: Deltarune Chapter 3 Guide is full of secrets, challenging puzzles, and branching content. Take your time, experiment, and don't be afraid to replay sections to unlock everything.
Can I play pacifist and still fight the secret boss?
The Deltarune Chapter 3 Guide notes that the Roaring Knight fight involves chipping their sword rather than defeating them, allowing pacifist runs to remain intact.
Get ready to conquer with our Deltarune Chapter 3 Guide?
With our Deltarune Chapter 3 guide, you'll uncover secrets, beat bosses, and explore every path — from the main story to the hidden routes.