Floor two had light.
Not the bioluminescent wall glow of the first floor. Actual directional light sources distributed at intervals along the ceiling, producing illumination that had shadows and gradients and the particular quality of light that interacts with a physical environment rather than emanating from every surface equally. He stood at the top of the stairs and looked at it and thought about what a floor with shadows meant for the creature that occupied it.
The creature was visible. He saw it before any of his detection skills confirmed it, standing near the far wall with a physical presence that the wrong-light of the subspace had not prepared him for. Roughly three metres tall, constructed in a way that the architecture of the floor's lighting had clearly been designed to complement, the shadows it cast on the walls moving with it as it paced a fixed circuit.
He could see it.
He pressed against the stairwell opening and mapped the floor through the skills while his eyes handled the surface information. The creature's circuit was predictable, ten paces in one direction, pause, ten paces back, pause, repeat. The pacing pattern of something that was guarding a specific location rather than patrolling a territory, the distinction significant because guarding behaviour implied a fixed attachment point and fixed attachment points had predictable gaps in coverage.
The attachment point was a door at the far end of the floor.
Not the reward cache. Not yet. Just the next door, leading somewhere that the creature had decided was worth standing in front of and pacing before.
He watched three full circuits before he moved.
The gap in coverage was at the turn point, the pause before reversal lasting approximately four seconds, during which the creature faced directly away from the entrance where he was standing. Four seconds at Galeforce Surge plus Slipstream enhanced pace covered roughly thirty metres. The floor was sixty metres long.
Two moves. Four seconds each. He needed the creature to be at the far turn for the first and at the near turn for the second.
He watched for the near turn.
It came. He moved.
The first thirty metres went cleanly, Wind Veil at full operation reducing his sound signature to near zero, the creature at its far turn with its back to him, and he pressed against the right wall at the thirty-metre mark as the creature completed its turn and came back.
It passed four metres from him.
He did not breathe for the four seconds it took to pass. Air Sense monitored its air displacement continuously, the skill's range sufficient to give him the creature's position without Thermal Mapping, and he held everything still while it moved past and reached the near turn and paused.
He moved again.
The second thirty metres he covered in three and a half seconds, the door within reach as the creature began its reversal, and he pressed through it before the reversal completed and the door closed behind him without sound.
He exhaled.
The stairwell on the other side was narrower than the first, the ceiling lower, the dark material of the tower's construction closer on both sides. She was already on the first step of the stairs going up, not having needed to cross the floor the way he had.
He looked at the stairwell below them. No sound. No Air Sense registration of the creature following.
She made the satisfaction sound and started upward.
He followed her.
Floor three announced itself before he reached the top of the stairs through temperature. Not warmth. Cold. The kind of cold that he had not encountered in this environment which ran warmer than he had expected, and which became significantly colder with each step up the stairwell until the top step opened into a floor where his breath fogged immediately and the bioluminescent wall glow was dimmer than the previous floors, as if the cold was suppressing it.
He activated Heat Shell immediately, the defensive Fire application that maintained his body temperature as a separate internal operation from external output, the VP expenditure starting from the first moment he stepped onto the floor.
[VP balance: 8,847,340,000]
[Heat Shell: active — VP cost: 40,000 per minute at current temperature differential]
40,000 VP per minute. At his current balance that was sustainable but not trivially so. He checked the temperature through Thermal Sovereignty and understood immediately why the cost was that high. The floor was not cold the way a cold environment was cold. It was cold the way a deliberate mechanism was cold, the temperature maintained actively at a level that Thermal Sovereignty registered as intentional rather than ambient. Something was producing this cold rather than the absence of heat producing it.
He moved deeper into the floor.
The creature found him before he found it.
No warning through any skill. Air Sense registered a pressure displacement one metre to his left at the same instant that something impacted his right side with a force that the Ash Mantle absorbed at full 600% damage resistance and still knocked him three metres sideways, his HP dropping from 28,060 to 26,840 in a single number and his body hitting the floor wall before he could process where the impact had come from.
[HP: 26,840/28,400]
She teleported him. Again selectively, his body relocating fifteen metres forward toward the floor's far end, the impact point left behind, and he was moving before he had fully registered the relocation, his processing catching up while his body acted on the environmental logic he had built over ten days on the islands.
He could not see the creature. Thermal Mapping showed nothing. Thermal Null showed a negative signature moving fast through the cold environment, the creature operating at a temperature below the floor's already extreme cold, making it readable as a negative heat signal rather than a positive one.
The negative signature was circling.
He used Ash Mantle and activated Core Resonance.
Core Resonance lasted twenty seconds. All stat bonuses from both cores doubling, all output multipliers stacking multiplicatively. He had used it once before in training after the Ashen Sovereign installation. He had not used it in a fight because nothing he had fought since the installation had required it.
The floor's creature was not a sixth zone creature. The fifteen metres she had relocated him did not put the creature at a safe distance. It put the creature at a distance where he could read its negative signature through Thermal Null and had two seconds of warning rather than zero.
He used Cold Compression.
Not the Water affinity sub-skill he had used against the Regent's ash plates. The Water affinity had been at F-grade contact range during the Regent fight. It had been developing across ten days on the islands under the wrong sky and had produced two additional sub-skills he had not yet tested in a real engagement. Cold Compression at its current proficiency had a range of eight metres and produced a temperature differential rather than a contact effect.
He directed it at the negative signature.
The creature stopped.
Not because Cold Compression had damaged it. Because the temperature differential Cold Compression produced was warmer than the floor's ambient cold, and something that operated at a temperature below even this floor's extreme cold encountering a directed temperature increase above ambient apparently triggered a response that looked like freezing in place, the biological equivalent of a system encountering a temperature it was not built to process.
He used Combustion SSS through the Ash Mantle's void penetration layer while the creature was stopped, directed at the negative signature's centre mass, and the void saturation from the Voidforge Absolute bypassed the first defensive response and the SSS-grade discharge at 4.6 Fire affinity resonance multiplier delivered full output into whatever was underneath the void layer.
The negative signature on Thermal Null went flat.
He held still for four seconds.
The signature did not resume.
He checked his HP.
[HP: 26,840/28,400]
The same number as after the wall impact. He had taken no additional damage during the engagement. He had also spent Core Resonance's two-hour cooldown, most of his Void Pool charge, and produced enough thermal output through Combustion SSS that the Null Field had immediately begun absorbing the residual heat, which meant the ambient temperature of the floor was now measurably warmer than it had been before the fight, the creature's cold-generation mechanism apparently having stopped with the creature.
She was standing eight metres from him with the amber eyes on the negative signature.
Then she looked at him.
He looked at her.
"Thank you," he said. Again. For the second time in two days, which was becoming a pattern he was tracking alongside her vocalisation data.
She looked at the far end of the floor. The reward cache was visible as a thermal differential through Thermal Sovereignty, a section of the floor where the material density was different from the surroundings. Beside it a sealed container the system was flagging as a consumable of unidentifiable contents.
He moved toward it with Heat Shell still running at 40,000 VP per minute and thought about the floors above and what the third floor's creature being capable of hitting him through Ash Mantle for 1,220 HP before damage reduction meant for what the fourth floor was going to produce.
The reward cache opened.
Tier 6 and 7 materials. The sealed container. He pocketed both and looked at the stairs going up and the Void Pool counter showing 84 from the ambient absorption and the Core Resonance cooldown showing 1 hour 58 minutes remaining.
He checked the VP balance.
[VP balance: 8,244,000,000]
The cost of Heat Shell over the floor crossing had been substantial. He was going to need the cooldown to run before he went to floor four. He had approximately two hours.
He sat against the floor's far wall with the heat of Thermal Sovereignty maintaining his immediate vicinity at a survivable temperature and watched the investment panel update while she sat beside him and the wrong light of the tower's cold floor shifted slightly warmer as the deliberate cold mechanism finished dying with the thing that had been running it.