Abyssus Lobby Secrets — Hidden Fountain, Fish Deity & Fissures
Find the secret fountain behind the Lobby waterfall, unlock Fish Deity, locate eight Surge Fissures and check hidden weapon and ability pickups.
Secret pond: the hidden fountain and Fish Deity
The hidden water room behind the Lobby waterfall contains the Fish Deity weapon. Finding the room is only one part of the unlock: its three statues record victories over the three Royal Abyss Heralds.
- Go to the waterfall at the back of the Lobby and enter the corridor behind it.
- Interact with the hidden wall inside the corridor to reveal the fountain chamber.
- Defeat each of the three Royal Abyss Heralds at least once, then return to the Lobby.
- Once all three statues are active, collect Fish Deity from the fountain.
If the fish has not appeared, compare the three statues with your Herald victories. Repeating one Herald does not meet the requirement to defeat all three different Heralds.
Build around Fish Deity → · Weapon unlock reference → · Source and location images ↗
Eight Lobby fissures unlock Tinker
The Lobby has eight fixed locations. Destroy all eight for the Tinker suit color in the Nautical Wardrobe. Start by recognising the cliff, shoreline, courtyard and indoor chamber; the linked reference views identify each spot.
- Lobby fissure 1: Cliff beside the large stone arch and camp supplies; look across the waterfall toward the rock face. Reference view ↗
- Lobby fissure 2: Seaward face of the dark rock beside the skeletal ship ribs, just above the waterline. Reference view ↗
- Lobby fissure 3: Look high into the tall indoor chamber above the noticeboard and hanging chains. Reference view ↗
- Lobby fissure 4: Low rocky shoreline beside a narrow waterfall, with ship ribs and broken masts across the water. Reference view ↗
- Lobby fissure 5: At the base of the dark wall in the stone courtyard, beside rubble on the floor. Reference view ↗
- Lobby fissure 6: Low in the narrow rock passage leading toward a warm yellow light. Reference view ↗
- Lobby fissure 7: Rock recess beside the waterfall, above the edge of a cloth canopy. Reference view ↗
- Lobby fissure 8: On the outer cliff ledge beside a waterfall and a yellow-lit cave opening. Reference view ↗
Track the eight Lobby fissures →
Equipment worth checking before a run
Brine Revolver
Look on the barrel near the Workbench in the Lobby and pick it up.
All weapon locations →Ancient Core
Interact with the sealed door in the Lobby artefact room after collecting the required artefacts, then take the Core from the pedestal.
Source conflict: the current acquisition page says 6 artefacts, but the challenge table says 3. Use the in-game artefact-room door requirement; neither number is treated as a verified universal threshold here.
Unlock and Forge details →Turret
Defeat The Golemancer, then collect the Turret from the table to the right of the exit portal.
Unlock and Forge details →Which station does what?
- Workbench: choose weapon, fire modes and ability before launching. It does not equip Ancient Forge upgrades.
- Soul Wheel: spend permanent Soul Fragments on passive progression.
- Deep Water Tank: set the next expedition’s Deep Water difficulty and, once unlocked, expedition variants.
- Artifact Storage: inspect collected artifacts and the Logbook. Use the Scribe checklist to keep a separate record of missing collection entries.
- Shooting Range: compare weapon handling and ability timing before committing to a route.
- Diving Bell: begin the expedition after finishing your preparation.
References: Lobby structures, fissure gallery, and the individual unlock sources on the ability guide.