How to beat Jevil in Deltarune

Jevil is one of the most challenging secret bosses in Deltarune Chapter 1, offering a tough but rewarding battle. To face him, you’ll need to locate and repair a broken key, unlocking his hidden prison.
This guide will walk you through every step—from finding the key fragments to defeating Jevil in Deltarune.

Where to Find Jevil in Deltarune

Before you can fight Jevil, you must unlock his cell by repairing a broken key. Here’s how:

Step 1: Locate the Hidden Door

Go to the Castle Dungeon’s first floor in Chapter 1.

Find the elevator with a floor labeled “?????” and ride it down.

Exit the elevator and follow the path until you meet Jevil, who mentions a key needed to free him.

Step 2: Collect the Broken Key Fragments

1. First Fragment – Seam’s Shop

• Visit Seam’s shop in the Field.
• Select the “Strange Prisoner” dialogue option to receive a broken key piece.

2. Second Fragment – Hidden Path Near Bake Sale

• Fast travel to Bake Sale and head left.
• Pass the two Bloxers and enter the room with dancing NPCs.
• Move south until Kris appears to be walking on air.
• Follow the hidden path, defeat or evade the Rabbicks, and claim the second key piece at the end.

3. Third Fragment – Card Suit Puzzle

• Fast travel to the Field and move right to the card suit puzzle.
• Input the sequence: Diamond, Heart, Club, Spade.
• Retrieve the final key fragment.

Step 3: Repair the Key

• Return to Bake Sale and go north to find Malius the Blacksmith.
• He will fix the broken key, making it usable.

Step 4: Unlock Jevil’s Cell

• Head back to the “?????” floor in the Castle Dungeon.
• Use the repaired key to open the hidden door.
• Prepare for battle—Jevil is one of Deltarune’s toughest foes!

How to Beat Jevil – Battle Tips

Jevil’s fight is fast-paced and chaotic, but these strategies will help you win:

Recommended Party Setup

• Ralsei (Healer) – Use Pacify to calm Jevil and reduce his attacks.
• Susie (Damage Dealer) – Focus on strong attacks.
• Kris (Balanced) – Use Defend to survive Jevil’s relentless assaults.

Key Battle Strategies

• Dodge Relentlessly – Jevil’s attacks are unpredictable; stay mobile.
• Heal Often – Use items like Dark Burgers or Ralsei’s healing spells.
• Exploit Pacify – If successful, this can shorten the fight significantly.

Why Fight Jevil?

Defeating Jevil rewards you with:

• Jevil’s Chaos Saber (for Susie) – A powerful weapon.
• Devilsknife (for Kris) – A unique dagger.
• A rare achievement and bragging rights!

Final Thoughts

Jevil is an optional but thrilling challenge in Deltarune Chapter 1. By collecting the key fragments, repairing it, and mastering his battle patterns, you can claim victory and earn exclusive rewards.

Ready to take on Deltarune’s craziest secret boss? Follow this guide, and you’ll be prepared for the chaos!

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