更新版系統導覽：地下探索、災厄收益與終局門檻

This article reorganizes the observed update content by player decision, not patch-note order. Exact values can change between builds; use the relationships below to understand what the newer systems add to a run.

1. The strategic change: a second economy underground

Spelunkers and Treasure Hunters create value on independent expedition timers. Unlike the visible mining pipeline, their output is delayed and uncertain: they may return with gold, Mithril, Prestige resources, or artifacts, and risk injury or loss depending on upgrades.

That changes the central question from “how fast can I destroy the next mountain?” to “how much delayed value do I lose by advancing now?” A slower mountain phase can be profitable when several expeditions are near completion.

2. Scale expedition capacity only after protecting it

More underground units mean more independent rolls, but also more housing and replacement risk. Build the system in this order:

1. unlock a small expedition team;
2. reduce downtime and improve return speed;
3. obtain survival or death-prevention support where available;
4. expand the team only when its returns pay for the housing;
5. deepen Underground Mapping once it feeds a chosen late-game multiplier.

An unprotected large team can erase its own gains through losses.

3. Scientists compound a long run

Scientists are most valuable when the run contains many future purchases. Their research benefits, Laser synergies, and access to system breakpoints accumulate over time. In an underground-focused run, expedition income creates more opportunities to buy upgrades, which makes cost reduction and research depth more useful.

Do not hire Scientists without a target. Add them when the next Scientist unlocks a named upgrade, improves the primary engine, or meaningfully reduces the cost of a long shopping list.

4. Calamities can change from pure hazard to resource event

Later artifacts and upgrades may turn hits, falling objects, or calamity triggers into gems, gold, Dens, or damage bonuses. At that point, maximum avoidance is no longer automatically optimal.

Use three states:

• survival state: calamities disable logistics; prioritize protection;
• neutral state: the line survives but gains little; avoid over-investing either way;
• harvest state: triggers reliably create more value than the disruption costs; allow controlled exposure.

The important word is controlled. A profitable trigger is still bad if it causes expedition losses or stops all deliveries.

5. Plan artifacts and keys as a route

Endgame access depends on items obtained from different systems: bosses, expeditions, forging, research, and special drops. Waiting until the final mountain to start collecting them creates a hard stop.

Keep a simple ledger during the run:

Source	What to track	When to act
Bosses	Unique rewards	Prepare before each checkpoint
Underground	Artifacts and mapping	Start early; returns are time-gated
Forge	Pool-limited items	Reserve Mithril and other inputs
Keys / special drops	Set completion	Take missing pieces over duplicate short-term rewards

Collection is now part of routing, not cleanup after the build is complete.

6. Choose an endgame scaling engine

The update adds several long-run vectors: Underground Mapping conversions, expedition-return bonuses, enhanced Laser support, Faith interactions, and Den-based scaling. You do not need to maximize all of them.

Pick one engine with three properties:

• you can feed it continuously;
• its supporting units also help the economy;
• it remains useful at the next boss or endgame gate.

Then use the other systems to cover weaknesses. For example, underground returns can fund a Laser engine, while Ballistas insure Den rewards.

7. What to change in an older route

• Start underground expeditions earlier if the run will be long.
• Value survival support before mass-hiring expedition units.
• Re-evaluate blanket calamity avoidance after obtaining trigger rewards.
• Track keys and unique artifacts from the beginning.
• Treat artifact retention and collection upgrades as route accelerators.
• Preserve one focused damage plan; new systems do not justify buying everything.

Version note

This synthesis is based on the build shown in the linked source material and the data set dated August 1, 2026. Names, values, and access requirements should be rechecked after a game update; the page emphasizes system relationships that are less likely to become obsolete than a copied list of numbers.