The Halibut Harpoon starts life as the Restricted Halibut Harpoon, a rod and harpoon gun hybrid that only reaches full use after two extra quest phases from Dr. Monty. Both phases run on Perfect Catches, and the final step charges a large in-game fee before the restriction comes off.
Quick answer: Take the Restricted Halibut Harpoon back to Dr. Monty, Perfect Catch 500 Pufferfish, then complete The Final Hoard by Perfect Catching 25 Bathyal, 25 Thalassic, and 25 Hadal Pufferfish before paying 50,000,000 C$.
What you need before unrestricting
You cannot start the unrestriction until you already own the Restricted Halibut Harpoon, which is the reward for finishing Dr. Monty’s earlier riddle and Pufferfish questline in the Outer Deep area of The Deep. Every Perfect Catch in the two unrestriction phases must be made with that rod, since it produces the mutated Pufferfish variants the final phase asks for.
“PC” in the quest text means Perfect Catch. A catch only counts when you complete the reeling minigame perfectly, so partial or normal catches will not advance the counter.
| Requirement | Detail |
|---|---|
| Rod | Restricted Halibut Harpoon |
| NPC | Dr. Monty (Monty’s Lab, Outer Deep) |
| Phase 1 | 500 Perfect Catch Pufferfish |
| Phase 2 | 25 each of Bathyal, Thalassic, Hadal Pufferfish (Perfect Catch) |
| Final fee | 50,000,000 C$ |
Phase 1: Perfect Catch 500 Pufferfish
Phase 2: The Final Hoard and the 50 million C$ fee
The Final Hoard narrows the targets to three mutated Pufferfish variants, all caught with the Restricted Halibut Harpoon. These mutations were introduced alongside the rod, and you need 25 Perfect Catches of each.
| Target | Amount |
|---|---|
| Bathyal Pufferfish | 25 Perfect Catch |
| Thalassic Pufferfish | 25 Perfect Catch |
| Hadal Pufferfish | 25 Perfect Catch |
Tip: Line up the full 50 million C$ before you finish the catches so the final turn-in is a single trip back to the lab.
How to confirm the Halibut Harpoon is unrestricted
Once you pay the 50,000,000 C$, Dr. Monty closes out the questline and the rod stops being the Restricted Halibut Harpoon. That completion is your confirmation that the process worked and the harpoon is fully usable.
If a phase will not advance, the cause is almost always the same. A catch was not a true Perfect Catch; you were using a different rod instead of the Restricted Halibut Harpoon, or you did not have the full 50 million C$ ready when you spoke to Dr. Monty. Fix the specific gap and the counter, or the turn-in will proceed.
