Sephiria Secrets — Elru, Hidden Rooms & Secret Artifacts

Last updated: August 12, 2026 · 7 min read · heavy spoilers

Spoiler warning: this page reveals hidden content. Bookmark it and come back after your first playthrough if you want to discover things yourself. Google's related searches ("sephiria elru location", "sephiria secrets") tell us most players end up here anyway.

Elru — the hidden NPC (location)

Elru is the most-searched secret in Sephiria. Here's the full story:

Where: Chapter 4, floors 2–3 — in a hidden room behind a cracked wall.
How to reach it: the cracked wall is on the left side of the floor-2 arena, behind a breakable pillar. Destroy it with a charged attack (holding attack, not tapping).
What Elru does: starts a side-quest chain that rewards a unique artifact set (the "Elru Set") not available anywhere else.
Missable? No — you can return on later runs through Chapter 4. But the quest chain has time-gated steps (3 real-world days), so start it early.

💡 If the wall doesn't break: it only spawns on non-boss floors, and only after you've beaten Chapter 3 once. If you're on Chapter 4+ and still don't see it, you're on a boss floor — try again next run.

Cracked walls & hidden rooms

Cracked walls appear on floors 2–3 of each chapter (never on floor 1 or boss floors).
They're marked by a faint glowing crack — easy to miss on low brightness; look for the shimmer.
Break them with a charged attack; regular attacks and abilities don't work.
Hidden rooms contain: rare artifacts, resource caches, and (rarely) a secret artifact.

Secret artifacts & their triggers

Secret artifact	How to get it	Effect (approx.)
Elru Set (3 pieces)	Elru's quest chain	Chaos pool bonus + ignore constraints
Bunny Medal	Pet every rabbit in Bunnyville	Small permanent move speed
Staff of Origins	Hidden room, Chapter 5 floor 3	Unique staff weapon unlock

The Elru Set's "ignore constraints" bonus is what players search for as"sephiria ignore artifact constraints" — it's the cleanest way to runchaos builds without stele farming.

Hidden interactions & cameos

Several NPCs in Bunnyville have hidden dialogue that only appears after specific artifact collections — talk to everyone after a big unlock.
The game includes cameos referencing the developers' previous game (Dungreed) — keep an eye on shop names and graffiti.
Some story choices unlock hidden endings — see our achievement guidefor the choice requirements.