148: Floor Ten

We cleared Floor 10 on a Saturday in October.

The roster had grown to 118 by mid-October — the announcement applications had brought 27 new members through the standard vetting, processed over three weeks with the same criteria as every previous intake. Wenqing had noted in the council summary: *18 of the 27 new members cited the charter's confidentiality record, not TwilightTide's identity, as the primary reason for applying.* He'd logged this as significant and left the significance unstated. The charter's six-month confidentiality hold was the recruiting argument. That was the right thing for it to be.

Floor 10's boss, the Shadowfall Arbiter, was Lv 48 and the most mechanically complex boss in the Black Castle so far. It operated in three distinct phases, each phase requiring a complete formation reset — magic-suppression field in Phase 1 that disabled all magic-class skills, a physical immunity barrier in Phase 2 that negated all physical damage, and Phase 3 that combined both fields simultaneously at a reduced version of each.

TwilightTide had flagged the Phase 3 combination as the probable failure point a week before the attempt. She'd sent the analysis draft to the council folder on Monday rather than waiting for the Thursday briefing, because the Phase 3 problem required discussion before the briefing, not during it.

"Every guild that's reached Phase 3 has wiped there," she said at the Thursday council session. The analysis draft was already in everyone's hands. She was presenting the verbal version for questions rather than information. "The combined field isn't a third formation — it's both previous formations simultaneously, which creates a configuration incompatibility. You can't run the magic-only formation and the physical-only formation in the same space."

"What's the resolution," Old Wolf said.

"Hybrid formation, but a different hybrid than the standard approach. Not compromising both — splitting the formation cleanly into two non-overlapping sub-formations that operate simultaneously in the same space without configuration incompatibility." She turned to page three of the analysis. "The split requires two formation anchors who can maintain independent coordination without crossing communication channels. Zhu Yuhan anchors the magic-class sub-formation. I anchor the physical-class sub-formation." A pause. "And the Berserker operates as the sole damage source in Phase 3, because he's the only class immune to both suppression fields."

Everyone looked at me.

I was aware of the look. The Berserker class was magic-immune by passive trait — one of the baseline class features, not a skill, not a gear effect, but a class-level passive that didn't interact with skill suppression fields. Physical-damage-based offense. Magic-suppression field didn't touch me. Physical immunity barrier didn't apply to me. Phase 3's combined field, which reduced both to partial effect, still didn't meaningfully affect my damage output because the reductions applied to categories I didn't use.

Solo DPS in Phase 3. That was the math.

"Solo DPS in Phase 3," Old Wolf said.

"Solo DPS with full guild healing support split between two sub-formations," TwilightTide said. "It's sustainable if the healing coverage is clean."

"The split communication channels."

"Zhu Yuhan and I have been working the split-channel communication in the Iron Hills since September. We can maintain independent coordination. The channel discipline is clean — zero crossings in the last three drills."

Since September. Two weeks before Floor 10 had been on the immediate plan.

She prepared for things before the things were known. Everyone in the council had heard Old Wolf say it, and everyone had confirmed it across eight floors of the Black Castle. It still registered every time she did it, because the gap between knowing something and having it be true remained real regardless of how many times it was confirmed.

***

The Floor 10 attempt ran for five hours and nineteen minutes.

Phase 1, the magic-suppression field: 51 minutes. The physical formation ran efficiently — Berserker-class and physical DPS at full output, the healers at partial capacity because healer skills were partially magic-class. TwilightTide ran physical-adjacent healing protocols through Phase 1, the variant she'd developed for magic-field environments in the Iron Hills mobile drills.

Phase 2, the physical immunity barrier: 1 hour 42 minutes. The magic formation took longer because our magic-class DPS output was lower than our physical output — the guild's composition skewed physical, which had been an optimization for Floors 1 through 9 and became a limitation in Phase 2. TwilightTide's magic-class healing ran at full capacity. Zhu Yuhan's magic healing ran at full capacity. The Arbiter's HP dropped slower than Phase 1, and the slower drop was visible in the formation channel's mood — not panic, just the specific patience of people doing the harder version of the right thing.

At 31% HP, Phase 3.

The combined suppression field activated. I watched the guild's DPS output indicators collapse to near-zero as the magic suppression killed the magic-class skills and the physical immunity made physical DPS irrelevant for everyone but me. The two sub-formations settled into their split configuration — Zhu Yuhan anchoring the magic-class support structure on the formation's left half, TwilightTide anchoring the physical-class support structure on the right.

My interface showed full healing coverage from both healers simultaneously, the two streams running in parallel without channel crossings. Clean, as she'd said. The channel discipline was clean.

I hit the Arbiter at full output. Solo.

The Phase 3 fight lasted 2 hours 46 minutes.

That was a long time to be the only damage source against a Lv 48 boss with 22 million HP. I've been in a lot of fights in this game, in this lifetime and the previous one, and the Phase 3 fight was the kind of fight where you stop thinking about the outcome and think only about the current second, the current position, the current health reading and the cooldown timer and the rotation. Everything else was too far away to be useful.

The Arbiter's mechanics in Phase 3 included an escalating enrage timer — a multiplying damage modifier that increased by 12% every ten minutes. At the 2-hour mark the modifier was at 290%, which meant the Arbiter was hitting three times its base damage per strike. At 290% incoming damage, the requirement on the healing side shifted from substantial to extreme.

TwilightTide's healing at that output level — sustaining solo-target continuous healing at 290% incoming damage modifier for forty-six minutes — exceeded her mana pool twice. She'd carried twelve mana potions. She used ten.

I knew she was using them because the healing stream didn't waver. There was no gap, no deceleration, no moment where the coverage thinned. If she was running dry and topping up and running dry again, it happened in the invisible space between one potion and the next, managed with the same precision as everything else she managed.

The Arbiter's HP reached 0 at 5 hours 19 minutes 7 seconds.

[System: SHADOWFALL ARBITER eliminated. BLACK CASTLE FLOOR 10 CLEARED. Server record: 5 hours, 19 minutes, 7 seconds. SEVERING LIGHT.]

There was no previous server record. We were the first.

***

After the kill notification, the guild channel was briefly chaotic in the way it got after a major clear — the accumulated tension of a long attempt releasing at once, questions and celebrations running over each other in the text stream. Wenqing said: *Floor 10. First clear, Tianlong server. Records will be updated,* and the channel settled into the post-clear review mode.

Old Wolf sat on the Floor 10 kill marker and looked at TwilightTide.

"Twelve mana potions," he said.

"I carried twelve. I used ten."

"At 290% incoming damage modifier."

"At 290% the incoming damage spikes are significant. Continuous output without interruption." She had the look she had after long high-focus sessions — not exhausted, exactly, but very still in the way a drawn bowstring is still. "The alternative was letting him die. The modifier would have reached 350% at 2 hours 20 minutes and at 350% continuous output becomes untenable even with potions. The fight had to finish before 350%."

"So you held it."

"I held it."

Old Wolf looked at the Floor 10 Central Hall. The stone columns, the kill marker, the ninety-odd guild members distributed through the space in the post-clear configuration. "For two hours forty-six minutes," he said.

"He was the only damage source."

"I know." He stood. "He was the only damage source and you kept him alive for two hours forty-six minutes at a 290% incoming damage modifier." He said it with the flat precision of someone reading a record, which was what he was doing. That was what it was going to say in the kill record. He was reading the fact.

She didn't say anything.

Zhu Yuhan, from across the Central Hall: "The split coordination held the whole time. Zero channel crossings."

"Zero," TwilightTide confirmed. "Zhu Yuhan is very clean."

"You both are," Zhu Yuhan said.

They looked at each other across the Floor 10 Central Hall. It was the Floor 10 version of the Floor 6 eastern walk — something that had accumulated through months of three AM sessions and formation analysis and the particular intimacy of two people who'd been in the same zone at the same hours for the same reasons. No name for it. Just visible.

***

I ran the Pioneer's Path cycle count at eleven PM that night.

Cycles complete: 57 of 80 needed for the next Heritage Fragment.

Twenty-three cycles remaining. At the current rate — four to six cycles per week in the Iron Hills three AM window — that was five to six weeks. December at the latest.

I looked at the Black Castle floor progress. Floor 10 cleared. Floors 11 through 20 were accessible. The deeper floors were the ones where the Heritage content lived — the pieces of the Sword Sovereign's quest that Beigong Yan had pointed me toward in the Floor 2 training ground, the path I'd been walking since March.

The path was long. But it was a known distance now. Five to six weeks to the next Heritage Fragment. December.

Wanqing, on the bonded thread at eleven-fifteen: *Floor 10.*

*Yes.*

*Server first.*

*Yes.*

A pause. *She held him for two hours forty-six minutes.*

*Yes.*

*She doesn't do anything halfway.*

*No.*

*Neither do you,* Wanqing said. Her phrasing was exact, as it always was: she said *neither do you* rather than *you don't either*, which was a small difference that said something about how she understood the comparison. *That's probably why it works.*

I closed the thread and looked at the ceiling.

December for the next Heritage Fragment. February or March for the fund closure. March to July for the transplant match window.

Everything on the timeline. Everything in motion. The floor clear tonight was one component of a larger structure that was running correctly, each part in its position, each part doing the thing it was designed to do.

One thing at a time. All at once, also.

The Black Castle floors beyond 10 were accessible now. Floor 11's reconnaissance data had been accumulating since September — TwilightTide's preliminary analysis was already in the council folder, the working draft that Wenqing had been reading since last week. The Iron Magistrate with its legal-judgment mechanic, its sixty-second movement tracking, the requirement for a randomization solution that neither of them had finished designing yet.

The Pioneer's Path was at cycle 57. Twenty-three more cycles, four to six weeks at the current rate, and Heritage Fragment III would unlock.

The fund was on track. The transplant window was March to July. The timeline held.

I looked at the ceiling and thought about TwilightTide holding the healing stream for two hours and forty-six minutes at 290% incoming damage, ten mana potions, not a single gap in coverage. The kind of performance that was possible when someone had been building the discipline in the three AM window for eight months, not because anyone had told them to, but because they'd decided the thing was worth doing and had done it every morning they could.

Some things were like that. You built them in the hours when no one was watching, and then you used them when the fight required them, and the using was the proof of the building.

I set the alarm for three AM and went to sleep.