This boss combines speed with unpredictable mechanics.

Key Strategies:

• Prioritize evasion when facing the boss’s orange orb barrage

• Exploit openings to attack during bomb-projectile phases

• Eliminate minions quickly—they drop healing items

• During the last phase, target the black boss variant while dodging meteors

Victory grants the Shadow Mantle, a defensive gear that mitigates damage and unlocks further secrets.

Step 5: Defeat the Roaring Knight (Optional Secret Boss)

Equip the Shadow Mantle before confronting the Roaring Knight (post-Tenna) to activate a hidden final phase. Defeating the Knight rewards a Shadow Crystal and Black Shard (Kris’s weapon).

Even with the Mantle, this battle remains extremely challenging, though manageable.

FAQ

Q: Can you get the Shadow Mantle without S ranks?

No, achieving S ranks on both Tenna boards is mandatory to unlock the S-Rank door.

Q: Do I need to beat the boss in one run?

No, failing allows retries via Gaster’s checkpoint.

Q: Is the Roaring Knight the secret boss?

Essentially yes—it’s Chapter 3’s ultimate challenge when armed with the Shadow Mantle.

Q: What does the Shadow Mantle actually do?

It diminishes incoming damage in critical encounters and may affect future chapter progression.