Upgrade for the route you actually lose
Staff, Speed, Strength, Carry and Rebirth can all sound like progression goals, but the useful choice is the one that changes a measurable failure. If you lose time on the return, timing or speed matters. If you cannot carry the result, more route distance is not the first fix.
The public listing mentions Rebirth and Stars in its tags, but it does not publish a complete requirement or price table. This guide gives you a decision order and a test method instead of copying an undated catalog.
Match the bottleneck to the next test
| Topic | Observed bottleneck | First test | Do not assume | Record |
|---|---|---|---|---|
| Return is too slow | You reach the target but miss the safe return | Measure the same route before and after Speed or staff changes | The most expensive Staff is always the fastest | Outbound, return and buffer |
| I leave items behind | Carry fills before the useful pickup | Compare Carry against one additional route segment | More movement fixes an inventory limit | Slots, pickups and route |
| An interaction blocks progress | A Strength-gated action slows the loop | Record the exact requirement and result | A community requirement applies to every update | Requirement, date and source |
| I am considering Rebirth | The reset tradeoff is unclear | Write what resets and what persists before confirming | A multiplier or Star reward is guaranteed without a current check | Before/after state |
A controlled upgrade test
Run the route unchanged
Time one repeatable route with your current setup before buying or resetting.
Change one variable
Do not buy Speed, Carry and Staff at once if you want to know what solved the problem.
Repeat the same test
Use the same target, starting point and return rule so the comparison is meaningful.
Keep or redirect
If the change did not move the bottleneck, save the next purchase for a different constraint.
How to handle incomplete Staff data
A community Staff table can be a useful shortlist, especially for names and reported effects. It is not enough to guarantee price, open time, luck, or availability in your server. Label the table, date it and test the effect that matters to your own route.
Rebirth deserves the same discipline. Write down what you will lose and what you expect to gain before confirming. If the public game does not expose a stable formula, the page should explain the uncertainty rather than fabricate a multiplier.
Upgrade FAQ
Is there one best Staff?
Not without a current, comparable table of effects, requirements and prices. Choose based on the route bottleneck you can measure.
When should I Rebirth?
When you understand the reset cost, the persistent benefits and the route you will rebuild. Verify the current in-game confirmation before accepting.
What should I upgrade first?
The cheapest change that directly fixes the failure you measured—speed, Carry, Strength or Cash—not a universal tier ranking.
Upgrade source
Read the source type and checked date before treating a changing claim as a fact.
