Shadow Mantle is the secret boss that you must defeat to obtain a useful item in Deltarune Chapter 3. Here’s how to do it.

With Deltarune Chapters 3 and 4 finally released after much anticipation, players are already committed to uncovering the secrets and riddles hidden by Toby Fox. One of the biggest secrets in the new Chapter 3 of Deltarune is a hidden boss, The Shadow Mantle. While the final boss of Chapter 3 presents quite a challenge, you can make the battle easier by obtaining the Shadow Mantle item.

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However, acquiring this item is quite difficult and can be easily overlooked before facing the boss. Here’s a guide to help you get the Shadow Mantle item in Deltarune Chapter 3.

Also Read:Deltarune: How To Find and Use Glowshard

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Shadow Mantle in Deltarune Chapter 3

The Shadow Mantle serves both as an item and as the secret boss you encounter in Deltarune Chapter 3. To challenge it, you need to achieve an S rank in each of Tenna’sminigamerounds.

After completing each round, you can pass through the S Rank Door at the back of the room to play a minigame. Additionally, each time you enter the door, the challenge is different. However, during the third round, you will face the Shadow Mantle at the end of the minigame.

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Tips on Defeating the Shadow Mantle in Deltarune

Once you defeat the boss, move to the upper part of the room and open the door to the television on the right side. You will obtain the Shadow Mantle item after opening the treasure chest. Make sure to equip it before challenging the final boss; otherwise, you risk being defeated in one or two hits.

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Shadow Mantle is the secret boss in Deltarune Chapter 3 (Image via Toby Fox)