Boss Guides

Crystal Chamber

A crystal-covered Tyrant. Keep destroying its shoulder crystal parts, and decide in advance how you'll handle the left/right choice interruption.

Tyrant classElementWaterWeaknessElectric Code

Based on the standard code. Solo Raid Season 35 featured a Wind code variant (weak to Fire).

Where it appears

  • StoryMain story boss in Chapters 28, 30 and 31Same patterns at 28-40 and elsewhere, with only the required combat power going up.
  • Solo RaidSolo Raid Season 10 (February 2024)
  • Solo RaidSolo Raid Season 35 (March 2026, Wind code variant)

Mechanics and counters

  • Shoulder crystal parts

    Pattern
    The crystal horns on both shoulders regrow after being destroyed, and destroying them deals heavy damage. They don't count as a core, so core-hit skills don't trigger. In phase 2, a horn-shaped crystal grows on its head.
    Counter
    Destroy the parts as soon as they appear. That's the key to clearing it.
  • Crystal missiles

    Pattern
    Fires the crystals on its back as missiles. With a taunt Nikke in the squad, that Nikke can take every hit alone and go down.
    Counter
    They can be shot down. Clear them right after launch with fast-firing Nikkes.
  • Crystal Piercer

    Pattern
    Unleashes crystals for AoE damage while raising a barrier. Only Electric code damages the barrier.
    Counter
    Interrupt it with Electric Nikkes. You can also miss it on purpose and soak it with cover.
  • Left/right choice interruption

    Pattern
    Interruption 1 on the left and interruption 2 on the right appear together. Stopping 1 brings a light that permanently lowers ATK, and stopping 2 brings a large crystal missile. Miss both and both patterns come.
    Counter
    Pick the side that suits your squad. It's easier if everyone takes cover and you sweep the circles with shotguns or MGs.

Recommended Nikkes and teams

Union Raid Isabel team

The Isabel and Arcana pair is the core of the Electric damage, with Cinderella adding more. The boss has no core, so Crown fits better than Nayuta.

Based on 2026-10 sources

Tribe Tower teams

Each Tribe Tower only allows Nikkes from that manufacturer. The Pilgrim/Overspec tower also allows Overspec Nikkes.

Missilis

The standard Missilis core, with Liter, Tia and Naga on cooldown, shields and healing, and Ein and Quency: Escape Queen dealing damage.

Based on 2026-05 sources

Good to know

  • Shotguns and MGs are good for handling interruptions and missiles.

Raid seasons

Guide videos

As of 2026-10-26