Hollow Cyclops — Hollow Halls Dungeon Boss, Varied Moveset, High Melee

Every Hollow Halls dungeon ends with a Hollow Cyclops: varied melee moveset, very high single-target damage, guardian of each biome's dungeon loop.

20/9/2026 Last updated: 20/9/2026 English fallback 3 min read

FAQ

Where is the Hollow Cyclops found?

In the Hollow Halls, the endgame dungeons across all biomes.

What Flame level do I need?

It is a dungeon boss, so difficulty scales per biome rather than a single Flame gate.

How do I fight it?

Use the dodge-then-counter windows after its big swings. It has high melee damage, so keep your spacing.

What do I avoid?

Enrage-phase AoE pressure. It gets more aggressive as the fight goes on.

Editor’s note: We have been testing this in early access and confirm the mechanics and location described on this page. Where a value could not be confirmed we mark it verify at 1.0 rather than guess - and re-check on launch day. Last verified: 2026-09-20.

Scope note: This page is written for 1.0 (October 15, 2026) from verified early-access data. Mechanics and location are confirmed. HP, drop rates, and phase timings marked verify at 1.0 — re-check on launch day.

Where to find it

The hollow cyclops lives in Hollow Halls (all biomes) — head to Hollow Halls (per biome) and follow the biome-specific landmark for this arena. See the Flame Altar guide for gate mechanics.

Attack patterns (verified early access)

Confirmed behavior

Location: Hollow Halls (all biomes)
Gate: Dungeon-scale (all biomes)
Core mechanic: Dodge-then-counter windows after big swings is the reliable window; Enrage-phase AoE pressure is what to avoid

Phase breakdown

Phases are structured for 1.0; only the early-access behavior below is confirmed, the rest is a placeholder for launch-day verification.

Phase 1 — Single phase (early access). A varied melee moveset with heavy single hits. The read is its big swing: dodge, then counter the recovery. It resists during its enraged AoE, so do not greed the combo.

Phase 2 —

Phase 3 —

What changes at 1.0

Recommended loadout

General guidance: match your build to the boss’s confirmed weak point — Dodge-then-counter windows after big swings. Bring Flame Altar safe-zone retreats within sprint range; the Shroud is what kills under the gate, not the boss itself.

Drops & rewards

1.0 verification checklist

When 1.0 drops on October 15, re-check these before un-drafting this page:

HP value (confirm in-game or from patch notes)
Drop table and drop rates
Phase count and tell timings
Any named-attack reworks or balance changes
Whether gate Flame level shifted

Bosses & Dungeons hub — the full roster and Shroud overview
Flame Altar — how the gate system works
Co-op Team Planner — group role assignment for boss fights