This guide provides a comprehensive list of locations where you can find upgrade materials that cannot be obtained by farming enemies. These materials include Blackwater Crystals, Sea Tooth Bones, and Immundus Diamonds.
How Many Are There?
- Blackwater Crystals: There are a total of 3 Blackwater Crystals in the main campaign and an additional 3 in the ToO DLC.
- Immundus Diamonds: In the main campaign, you can find 10 Immundus Diamonds, and there are 4 more in the ToO DLC.
- Sea Tooth Bones: The ToO DLC contains 20 Sea Tooth Bones. It is worth noting that you will need 19 of them to fully maximize Jerold’s Talents.
All of these upgrade materials will respawn in NG+/Journey 2 and subsequent playthroughs.
Blackwater Crystals: Main Campaign
Unmissable – 2
- 1 – Blessedland; dropped by a mid-chapter boss Elena
- 1 – Karst Cave; dropped by the chapter boss Usurper
Missable – 1
- 1 – Karst Cave, sold by a Sifler for 40 Big Bones.
In the room occupied by two Sanctifiers and a High Priest, there exists a concealed passage leading to the Sifler. To access this passage, you need to locate a bookshelf and interact with it, as it serves as a hidden entrance.
Blackwater Crystals: Tides of Oblivion
Unmissable – 1
- 1 – The Tower of Origin; dropped by the chapter boss The First Fallen: Handel
Missable – 2
- x1 – Snowfields; sold by Sifler for 40 Big Bones.
Within the snowfields, proceed past the fountain until you come across a substantial wooden walkway. This walkway spans over the street situated on the right side of the fountain.
Cross the initial walkway and continue past another wooden walkway. Keep walking until you reach a bridge distinguished by two torches. On the bridge, you will encounter a confrontation between a Scavenger and a Sludge Collector. After passing them, you will notice two ladders. Choose the ladder that leads downwards to proceed further.
From that point onward, you will encounter a linear path with intermittent short dead ends. As you progress, you will come across a shortcut that leads back to the street. Beyond the shortcut, you will discover another ladder that will take you to the Sifler. The Sifler is a vendor who specializes in selling a Crystal.
- 1 – Treasury; dropped by an optional boss Treasure Thieves
How to find the boss:
- Acquire five stones by feeding five Ichthyosaurian Heggies (detailed guides can be found online on their locations).
- Locate the Sifler in the snowy areas by following specific instructions; the entrance to the Treasury is located adjacent to the Sifler.
- Obtain the Treasury Master’s Trial near the Treasury entrance and utilize it to insert the stones acquired from the Heggies. The sequence should be as follows: Treasury -> Heggie -> Humans -> Siflers -> Colossus.
Immundus Diamonds: Main Campaign
Unmissable – 4
- 2 – Edith; dropped by the chapter boss – Edith
- 1 – Blessedland; dropped by the chapter boss Proxy Higgins
- 1 – Karst Cave; dropped by the chapter boss Usurper
Missable – 6
- 1 – Katib; Lost Valley.
To access the Lost Valley, make your way to the map corner where a boar and two lizards are situated. Look for a rock positioned above them, and the entrance can be found there. You’ll need to climb a ladder leading to the nearest house in order to reach it.
- 1 – Blessedland; sold by a Sifler for 4 Fractured Bodies.
Leap from the edge of the expansive arena where a Demiurge is on the brink of death. Upon landing, the Sifler will quickly flee from the spot and re-emerge within the tunnels.
- 1 – Blessedland; Trinity Hall
Adjacent to a breach in the wall that serves as a passage between a meeting room and the grand stairway, you will find a section where the stairs have collapsed. Positioned on the left side of the tunnel beneath the stairway, there is a chest that holds a precious Diamond.
- 1 – Karst Cave; dropped by an optional mini-boss Maddened Ascetic Jr.
You can encounter this mini-boss within a petite chapel located at the start of the level.
- 1 – Karst Cave
Within a hall filled with numerous broken cage elevators, search for one that has a functioning lever. This particular elevator will take you to a small cavern where you will discover three chests. One of these chests holds a valuable Diamond.
- 1 – Karst Cave; sold by Sifler for 4 Fractured Bodies.
In the room housing two Sanctifiers and a High Priest, there is a hidden passage to the Sifler located behind a bookshelf.
Immundus Diamonds: Tides of Oblivion
Missable – 4
- 1 – Caverns.
Ascending a ladder on the right wall will lead you to a chest containing an Immundus Diamond.
- 1 – Snowfields; sold by Sifler for 4 Fractured Bodies.
To reach a large wooden walkway in the snowfields, proceed beyond the fountain. The walkway extends over the street situated on the right side of the fountain.
Proceed across the walkway and continue past another wooden walkway. Keep walking towards a bridge that is indicated by two torches. As you approach, you will notice a Scavenger engaged in a battle with a Sludge Collector. Beyond them, you will encounter two ladders. Choose the ladder that leads downward.
Once you descend the chosen ladder, you will enter a path with several intermittent dead ends. As you progress, you will come across a shortcut that leads back to the street. Keep going, and you will discover another ladder. Ascending this ladder will take you to the Sifler, who is a merchant offering a Diamond for sale.
- 1 – Snowfield, right path.
Inside a chest that is obstructed by a gate, you can find a valuable item. To reach this chest, you need to jump from a ledge situated above it. Ascend the stairs within a hall where a group of Sludge Collectors resides. The ledge you must jump from is directly in front of the stairs and can be identified by a collectible marker.
- 1 – Tower of Origin.
On the balcony where you can find the mechanism for the main elevator, accessible through the right path, there is a green Marred guarding a secluded area. Within this nook, there is a ladder that leads to the “rafters.” Once you ascend to the rafters, you will discover two chests, and one of them holds an Immundus Diamond.
Sea Tooth Bones
Arranged in the sequence of acquisition, there are a total of 20 items available. Among them, 3 items can be obtained only by defeating specific bosses and should not be missed. The remaining items, however, can be easily overlooked or missed.
Village
- [1], [2] Sold by a Sifler. The Sifler can be located on the first floor, concealed behind a circular elevator.
- [3] After riding the elevator back up, proceed towards the right and ascend a ladder that is protected by a Sludge Collector. At the top of the ladder, you will find walkable wooden roofs that are situated closely, leading to a chest containing a Sea Tooth Bone.
- [4] On the deck of a ship. To access it, you will have to leap from the ledge above onto the bowsprit of the ship. Be cautious about your health while attempting this maneuver.
Caverns
- [5] Located on the first floor of Bravo’s residence, you will find it inside a chest. To reach this area, you need to descend through a hole in the ground.
Corpse Pit
- [6] Upon entering, make a left turn and you will find a chest on a ledge below. The Sea Tooth Bone can be found inside this chest. However, please be mindful of your health while accessing this area.
Great Bridge
- [7] Engage in conversation with a Marred individual situated in front of the bridge.
- [8], [9] You can purchase it from a Sifler who is located just beyond the bridge.
Scavengers’ Lair
- [10] Proceed to descend into the lair where you will find a chest in the first room on the left. Inside the chest, you will discover the Bone. However, please note that the chest is protected by a Scavenger.
- [11] Deep within the depths of the lair, you will come across a chest that contains the item you seek. However, exercise caution as the chest is guarded by a seated Scavenger.
- [12] Defeat Guderian the Guardian.
- [13] Once you have successfully defeated the boss, descend to the ground level by utilizing the elevator in the boss arena. Next, interact with the lever that rotates the gates, and ride the elevator back up. Proceed to retrace your steps into the lair, where you will discover a passage that was previously inaccessible. Drop down through this passage and climb two ladders to reach a chest containing a Sea Tooth Bone.
- [14] Return to the ground level, but refrain from exiting through the golden gate. Instead, navigate through a passage located on the left side and ascend a ladder. As you progress further, you will come across Bravo. Accept his request for assistance, and in gratitude, he will present you with a Sea Tooth Bone as a gift.
Snowfields
- [15], [16] You can acquire it from a Sifler. On the left side of the exit from the Scavengers’ Lair, there is a small building containing an elevator. Utilize the elevator to re-enter the Caverns, where you will find the Sifler offering the item for sale.
- [17] To obtain this Bone, it is necessary to complete Bravo’s sidequest titled “River of Memories”. The Gear Wheel, on the other hand, can be found within the Scavengers’ Lair. Look for a chest in a small room located adjacent to the entrance of Guderian the Guardian’s arena to locate it.
The Control Lever can be found in the Snowfields. Take the path on the left side. As you progress, you will come across an area where Scavengers are engaged in combat with Sludge Collectors. Look for a Sludge Collector who is situated on a ledge, with two torches surrounding them. Behind this Collector, there is a platform that you can jump down to. Make your way around and climb back up. After exiting the building, pass through a stone gate that leads to a bridge.
The bridge ahead features a locked cellar, and in order to obtain the key, you must defeat a character named Jonathan who is guarding it. To neutralize Jonathan and gain an advantage, utilize a Blinding Smoke item to temporarily disorient him. This will cause him to de-aggro, allowing you to perform a backstab attack. Repeat this strategy two more times, ensuring that you wait for the black smoke to dissipate before throwing another Blinding Smoke to avoid wasting your resources.
Head back to the Scavengers’ Lair, specifically to the location where you previously encountered Bravo. Once there, activate the mechanism as instructed.
Make your way back to the village and retrieve the Sea Tooth Bone that you have earned through your efforts.
- [18] Within the Tower of Origin, specifically on the balcony where the main elevator mechanism is located, accessible from the right path, you will encounter a green Marred guarding a nook. Inside this nook, there is a ladder that leads to the “rafters”. Ascend to the rafters, where you will find two chests. One of these chests contains a Sea Tooth Bone.
Tower of Origin
- [19], [20] Engage in battle and defeat The First Fallen, known as Handel.
Conclusion
Upon successfully collecting all the items, your ultimate reward is the ability to fully maximize and enhance the character widely regarded as the most loyal and exceptional companion in the game.
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