This guide lists all places where you can find upgrade materials that cannot be farmed from enemies: Blackwater Crystals, Sea Tooth Bones, and Immundus Diamonds.
How Many Is There?
★ Blackwater Crystals: 3 in the main campaign and 3 in ToO DLC.
★ Immundus Diamonds: 10 in the main campaign and 4 in ToO DLC.
★ Sea Tooth Bones: 20 in the ToO DLC. You need 19 to max out Jerold’s Talents.
All upgrade materials respawn in NG+/Journey 2 and onward.
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.
◌ A passage to the Sifler is behind a bookshelf in the room with two Sanctifiers and a High Priest.
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.
◌ In the snowfields go past the fountain to reach a large wooden walkway. It’s goes over the street on the right side of the fountain.
◌ Cross the walkway; walk past another wooden walkway, towards a bridge marked by two torches; you will see a Scavenger fighting a Sludge Collector. Past them are two ladders – one leads up, and the other leads down. Pick the one that leads down.
◌ From there it’s one path with a bunch of short dead ends here and there. Past a shortcut that leads back to the street you will find another ladder which leads to the Sifler who sells a Crystal.
1 – Treasury; dropped by an optional boss Treasure Thieves
How to find the boss:
◌ Feed five Ichthyosaurian Heggies (there are multiple yt guides on where to find them) to get five stones from them.
◌ Follow directions for finding the Sifler in the snowfields; the entrance to the Treasury is right next to him.
◌ Pick up Treasury Master’s Trial at the doors to the Treasury and use it to insert stones obtained from Heggies. The order is 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.
◌ The entrance to the Lost Valley is located in the map corner where a boar and two lizards are; on the rock above them. Climb a ladder to the nearest house to get there.
1 – Blessedland; sold by a Sifler for 4 Fractured Bodies.
◌ Jump from the edge of the large arena where a dying Demiurge is. Once you reach the Sifler he will run away, and re-appear in the tunnels.
1 – Blessedland; Trinity Hall
◌ Right next to a hole in the wall that connects a meeting room to the grand stairway the stairs are collapsed. On the left side of the tunnel underneath the stairway is a chest which contains a Diamond.
1 – Karst Cave; dropped by an optional mini-boss Maddened Ascetic Jr.
◌ This mini-boss can be found in a small chapel at the beginning of the level.
1 – Karst Cave
◌ In a hall with many broken cage elevators find one with a functional lever. This elevator leads to a small cavern with three chests, one of which contains a Diamond.
1 – Karst Cave; sold by Sifler for 4 Fractured Bodies.
◌ A passage to the Sifler is behind a bookshelf in the room with two Sanctifiers and a High Priest.
Immundus Diamonds: Tides of Oblivion
★ Missable – 4
1 – Caverns.
◌ A ladder on the right wall leads to a chest with an Immundus Diamond.
1 – Snowfields; sold by Sifler for 4 Fractured Bodies.
◌ In the snowfields go past the fountain to reach a large wooden walkway. It’s goes over the street on the right side of the fountain.
◌ Cross the walkway; walk past another wooden walkway, towards a bridge marked by two torches; you will see a Scavenger fighting a Sludge Collector. Past them are two ladders – one leads up, and the other leads down. Pick the one that leads down.
◌ From there it’s one path with a bunch of short dead ends here and there. Past a shortcut that leads back to the street you will find another ladder which leads to the Sifler who sells a Diamond.
1 – Snowfield, right path.
◌ In a chest blocked by a gate. Accessed by jumping from a ledge above. Go up the stairs in a hall occupied by a group of Sludge Collectors. The ledge from which you need to jump is right in front of the stairs, marked by a collectible.
1 – Tower of Origin.
◌ On the balcony with the mechanism for the main elevator – the one that can be reached from the right path – is a green Marred guarding a nook with a ladder which leads to “rafters”. Up there are two chests; one of them contains an Immundus Diamond.
Sea Tooth Bones
Listed in the order of acquisition. 20 total; 3 are unmissable boss drops, the rest are missable.
I. Village
[1], [2] Sold by a Sifler.
◌ The Sifler can be found on the ground floor, behind a circular elevator.
[3] Ride the elevator back up; go to the right and climb a ladder that’s guarded by a Sludge Collector. Right next to the ladder’s top are walkable wooden roofs that lead to a chest with a Sea Tooth Bone.
[4] On the deck of a ship.
◌ In order to get to it you will need to jump to the ship’s bowsprit from the ledge above. Watch your health.
II. Caverns
[5] 1st floor of Bravo’s home, in a chest.
◌ Descend through a hole in the ground to get there.
III. Corpse Pit
[6] Turn left at the entrance, Sea Tooth Bone is in a chest on a ledge below.
◌ Mind your health.
IV. Great Bridge
[7] Speak to a Marred in front of the bridge.
[8], [9] Sold by a Sifler who can be found right past the bridge.
V. Scavengers’ Lair
[10] Descend into the lair; the Bone in a chest in the first room on the left, guarded by a Scavenger.
[11] In a chest the depths of the lair, guarded by a sitting Scavenger.
[12] Defeat Guderian the Guardian.
[13] After you defeat the boss descend to the ground level using his arena’s elevator.
◌ Pull the lever that rotates gates, then ride the elevator back up and backtrack into the lair. You will find a previously inaccessible passage – drop down, then climb two ladders to find a chest with a Sea Tooth Bone.
[14] Go back to the ground level.
◌ But do not exit through the golden gate. Instead proceed through a passage on the left, then climb a ladder. Further in you will find Bravo. Agree to help him, and he will gift you a Sea Tooth Bone.
VI. Snowfields
[15], [16] Sold by a Sifler.
◌ On the left side of the exit from the Scavengers’ Lair is a small building with an elevator inside. Use it to re-enter the Caverns. You will find the Sifler there.
[17] In order to get this Bone you need to complete Bravo’s sidequest, “River of Memories”.
◌ Gear Wheel is in the Scavengers’ Lair; in a chest in a small room next to the entrance to Guderian the Guardian’s arena.
◌ Control Lever is in the Snowfields. Take the path on the left. When you reach an area where Scavengers are fighting Sludge Collectors look for a Collector who’s chilling on a ledge, surrounded by two torches. Behind him is a platform you can jump down to. Go around and climb back up, then exit the building and pass through a stone gate leading to a bridge.
◌ The bridge has locked cellar; to get the key you need to defeat a Jonathan who’s guarding it. Throw a Blinding Smoke at him to make him de-aggro -> backstab; repeat 2 more times (wait for the black smoke to disappear before throwing another, else you’ll waste a throw)
◌ Return to the Scavengers’ Lair, to where you saw Bravo the last time. Activate the mechanism.
◌ Return to the village and go get your hard-earned Sea Tooth Bone.
[18] Tower of Origin.
◌ On the balcony with the mechanism for the main elevator – the one that can be reached from the right path – is a green Marred guarding a nook with a ladder which leads to “rafters”. Up there are two chests; one of them contains a Sea Tooth Bone.
VII. Tower of Origin
[19], [20] Defeat The First Fallen, Handel
Conclusion
Your reward for collecting them all is being able to max out the goodest and bestest boy in the game.
