Stuck Before Alchemy or the Ending? Exact Solutions

Your tree can look finished while one dark phone icon quietly holds the whole turtle economy hostage. If Alchemy is missing, start with Shellphone. If the ending is missing, trace the material routes, mystery nodes, and exact center before blaming the save.

Quick terms: Life Vials are items made at the Alchemy Station and spent on late skill nodes. The game shortens trillion shells to T and quadrillion shells to Q.

Alchemy Is Missing: Find Caraphone/Shellphone

If another tip calls it Caraphone, look for the phone-icon node named Shellphone in the current English UI. It is easy to miss after the nodes around it are already lit.

Checkpoint	What to select	Why it matters
Caraphone/Shellphone	The unbought phone-icon node	Lets you open the skill tree from anywhere on the island and reveals the route above it.
New upper route	The connected nodes that appear after Shellphone	Leads directly toward Alchemy.
Alchemy Station	The station node at the end of that route	Activates the island machine that turns shells into Life Vials.

Open the skill tree and locate the phone icon.
Buy Shellphone.
Follow the newly revealed connection upward.
Buy each required connected node until Alchemy Station becomes available.
Buy Alchemy Station, then close the tree and return to the island.

Activate Alchemy and Make Life Vials

The current requirement is 100T shells for one Life Vial. A balance of 1T may look enormous, but the machine will remain as useful as a decorative rock until the full 100T is in your pocket.

Own both Shellphone and Alchemy Station.
Return to the island and build your current balance to at least 100T shells.
Go to the Alchemy machine on the island, to the left of the shell-shaped shop building.
Stand beside the machine and use the interaction shown on your screen.
The machine spends 100T and creates one Life Vial.
Earn another 100T and repeat when another vial is required.
Open the skill tree and spend the vials on every unfinished node showing a flask cost.

If the station node is owned and you truly have 100T but no prompt appears, return to the menu, reload the save, complete one additional dive, and check the machine again. Use this only after checking the balance and skill node; it is a recovery step, not proof that every missing prompt is a bug.

Every Requirement for the Final Center Node

The four material buffs and the four ??? nodes are separate checks. The mystery nodes do not describe an extra effect; their confirmed job is to unlock the last upgrade once all four are owned.

Finish every remaining ordinary skill rank.
Own Shellphone and Alchemy Station.
Make enough Life Vials to buy every unfinished flask-cost skill.
Buy the four late buffs that require materials from the four ocean regions.
Buy all four nodes marked ???.
Trace the completed routes inward and select the exact central node.
When the tree reads 799/800, buy that center upgrade for 10,000,000,000,000,000 shells (10Q).

Where to Get the Four Old Materials

Material	Return to	Fast cleanup check
Scrap	Ocean Shallows	Run an early-depth sweep and break scrap deposits.
Crystals	Glacial Depths	Clear crystal rocks before returning to the island.
Mushrooms	The 600m depth or Swamp Waters	Search the floor and walls instead of swimming straight through.
Obsidian	Magma Abyss	Make a focused volcanic-material run with your late oxygen and mining upgrades.

Hover over a material counter in the skill tree to highlight the upgrades that use it. This turns the late-game scavenger hunt into a short shopping list—and sends one wildly overqualified turtle back for the scrap it ignored three biomes ago.

Repair the Hammock and Trigger the Ending

Buy all four material buffs and all four mystery nodes.
Buy the final center upgrade for 10Q shells.
Close the tree and walk to the hammock on the left side of the island.
Use the displayed interaction to repair the hammock.
Interact with the repaired hammock again to lie down.
The rest sequence triggers the hammock ending.

Thirty-Second Stuck Decision Tree

No Alchemy route: Buy the phone-icon Shellphone node, then follow the new connection upward.
A late buff wants an old material: Revisit Ocean Shallows for Scrap, Glacial Depths for Crystals, 600m or Swamp Waters for Mushrooms, and Magma Abyss for Obsidian.
An island object has not changed: Close the tree and return to the island. Complete another dive if the change is still delayed.
The controller keeps missing the node: Use quick D-pad taps for exact node-to-node movement; the stick is slower across the star.
The tree reads 799/800: Select the exact center and bring 10Q shells.
A valid Alchemy prompt remains missing: Confirm the node and 100T balance, reload from the menu, complete one more dive, and check again. Do not delete or restart the save.

These checks cover the progression gates around Alchemy and the hammock ending. They do not diagnose unrelated crashes, damaged saves, or input failures, but they should catch the dark node, forgotten material, or delayed island interaction standing between your turtle and a very expensive nap.

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