To get the Sightless Oracle Harpoon in Fisch, go to The Deep, complete the Gloomy Crevice perfect-catch quest, then finish the Deep Eyeless Truth quest by perfect-catching a Monstrous Cusk and turning in the required materials.
The Sightless Oracle Harpoon is tied to The Deep update content, so this is not one of the older harpoons you pick up from legacy locations. The unlock runs through two NPC quests in The Deep, with the hardest parts being a clean perfect-catch streak and a full material hand-in.
Because The Deep is fresh live-service content, check the in-game quest text as you go in case a later patch adjusts wording or requirements.
Sightless Oracle Harpoon unlock explained
The full route starts in The Deep, near the main area connected to the Deep Survey Device exchange. From there, you push farther in until you reach the NPC quest area.
KEY!
There are two gates before the harpoon is awarded. First, complete the Gloomy Crevice perfect-catch objective. After that, clear Deep Eyeless Truth, which asks for a perfect-caught Monstrous Cusk plus five each of its listed materials.
Requirements for Sightless Oracle Harpoon in Fisch
| Requirement | What |
|---|---|
| Reach The Deep | Travel to The Deep and head toward the NPC quest area. |
| Gloomy Crevice quest | Get 15 perfect catches in a row inside Gloomy Crevice. |
| Deep Eyeless Truth quest | Perfect-catch a Monstrous Cusk and gather the full material set. |
| Material set | Bring 5 each of Radiant Prism Scale, Abyssal Bio-Fluid, Hardened Chitin, Refined Scrap, and Ancient Bone. |
Here is the short version of what the unlock asks from you before the detailed route. The important thing is that the Monstrous Cusk requirement is a perfect catch, while the rest are material quantities.
Finish the material checklist before turning in Deep Eyeless Truth so you do not waste time running back to check which stack is short.
How to get the Sightless Oracle Harpoon in Fisch
Follow this route through The Deep, then clear both quest checks to claim the Sightless Oracle Harpoon.
STEP 1/10
Travel to The Deep
Go to The Deep to begin the Sightless Oracle Harpoon unlock route.
STEP 2/10
Reach the Deep Survey Device area
Head toward the main area where the Deep Survey Device was previously exchanged.
STEP 3/10
Go behind the building
Move behind that building and continue farther into The Deep.
STEP 4/10
Find the NPC quest area
Keep going until you reach the area with the NPCs tied to the harpoon quests.
STEP 5/10
Start the Gloomy Crevice quest
Begin the first quest, which requires 15 perfect catches in a row inside Gloomy Crevice.
STEP 6/10
Keep the perfect-catch streak alive
Take each catch carefully, because one mistake breaks the 15-catch streak.
STEP 7/10
Move to Deep Eyeless Truth
After the Gloomy Crevice objective is done, start the second quest, Deep Eyeless Truth.
STEP 8/10
Perfect-catch Monstrous Cusk
Catch a Monstrous Cusk with a perfect catch for the main Deep Eyeless Truth objective.
STEP 9/10
Gather the required materials
Collect 5 Radiant Prism Scale, 5 Abyssal Bio-Fluid, 5 Hardened Chitin, 5 Refined Scrap, and 5 Ancient Bone.
STEP 10/10
Complete both quests
Turn in the completed requirements to receive the Sightless Oracle Harpoon.
Video help
Deep Eyeless Truth materials
| Item | Amount |
|---|---|
| Monstrous Cusk perfect catch | 1 |
| Radiant Prism Scale | 5 |
| Abyssal Bio-Fluid | 5 |
| Hardened Chitin | 5 |
| Refined Scrap | 5 |
| Ancient Bone | 5 |
Do the Monstrous Cusk objective carefully, because it is not just a normal catch requirement. Once that is done, the rest of the quest comes down to having every stack at the required amount before the final hand-in.
Sightless Oracle Harpoon stats
| Stat | Value |
|---|---|
| Power | 12 |
| Range | 100 studs |
| Reload | 3 seconds |
| Velocity | 32 |
| Resilience | 15% |
| Accuracy | 25% |
| Max weight | 75,000 kg |
These stats make the Sightless Oracle Harpoon a separate The Deep unlock, not something covered by older harpoon routes or legacy weapon lists.
Mistakes that waste time
Do not hunt for the Sightless Oracle Harpoon at older harpoon spots such as Cursed Isle, Desolate Deep, or Ancient Archives. Those routes belong to pre-The Deep harpoon content and do not replace the two-quest unlock path.
Also, do not plan around a simple shop price or a quick crafting bench pickup. The unlock pressure is on the Gloomy Crevice perfect-catch streak, the Monstrous Cusk perfect catch, and the five-item material checklist for Deep Eyeless Truth.
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