The hydraulic seal on the door was still hissing when the Hunter crossed the threshold.
Aaron had exactly two seconds to catalogue what he was looking at before Kael's gun went off.
The first shot caught the Hunter's left pauldron. The impact registered as a flat crack, the kind of sound a hammer makes against poured concrete, and the round tumbled away into the dark. The Hunter didn't flinch. It didn't track Kael. Its visor—blank, matte black, a surface that seemed to absorb the server room's flickering blue light rather than reflect it—stayed fixed on Aaron with the patient geometry of a compass needle finding north.
Protocol-driven, Aaron thought, pressing himself back against the mainframe rack. It already knows where I am. Everything else is noise.
Rourke threw his hands up and a column of frost erupted from his palms, sheeting across the Hunter's chest plate in a crackling white curtain. The temperature in the room dropped fast enough that Aaron's exhaled breath turned to vapor. Ice crystals formed on the nearest server panel, and the readout displays stuttered, their blue glow going briefly pale and then strobing back.
The frost melted in under three seconds. The Hunter walked through it.
Another shot from Kael. Another ricochet, this one screaming off the Hunter's gorget and punching a hole through a cable conduit overhead. Sparks rained down in a brief orange curtain. The smell hit Aaron immediately—burning insulation, hot copper, the acrid back-of-the-throat bite of ozone.
The Hunter took another step. Then another. Each footfall was deliberate, unhurried, the stride of something that had already run the probability trees and found the outcome satisfactory. Its right arm was raised, weapon leveled, and the weapon was pointed at Aaron's sternum with the kind of calm that had nothing to do with confidence and everything to do with certainty.
Aaron's Error Logger interface ghosted up at the edge of his vision, uninvited.
[PASSIVE SCAN — ENTITY DETECTED]
Designation: Compliance Hunter, Mk. IV
Primary Function: Anomaly Retrieval / Containment
Behavioral Mode: PROTOCOL LOCK — Target Acquisition (Primary)
Threat Response: NON-NEGOTIABLE
Active Subroutines: 14
Observable Deviation Rate: 0.0%
Zero deviation. Aaron stared at that number while Kael screamed something in his peripheral vision and fired again. It's not improvising. It's not reading the room. It's executing a script.
That was the piece that didn't fit.
Standard Compliance Enforcers—the two his team had been dismantling before this thing walked in—they were reactive. They threat-assessed. They shuffled priority targets based on incoming damage. He'd watched one of them track toward Rourke when the frost hit, recalculating.
This one hadn't moved its aim a single degree.
Aaron's back found the edge of a server rack. The metal was cold even through his tactical vest, cold enough to feel through the layered fabric, and he used that sensation to anchor himself, to stop the cold crawl of Janus's warning from replaying in his skull—I see you, Aaron—and focus on the immediate geometry of the problem.
It's not here to engage the raiders. It's not here to secure the room. It's here to retrieve the anomaly. Me.
He ran the behavioral pattern back through what he knew. Mk. IV Hunters weren't field-adaptive combat units. They were retrieval units. Precision instruments. Their subroutines were layered in strict priority order, and at the top of that stack, above threat response, above self-preservation, above everything—was target lock maintenance.
Which meant the subroutines below that priority were still running.
They were just suppressed.
Aaron's gaze flicked sideways to the secondary server stack against the east wall—the older hardware cluster, the one that had been throwing intermittent read errors since they'd entered the room. He'd noticed it twenty minutes ago and filed it away as irrelevant. Aging infrastructure, probably running a legacy diagnostic loop that never fully terminated. The kind of thing a proper system admin would have flagged and patched. The kind of thing Janus hadn't bothered with because it was low-severity.
The kind of thing that, if you introduced a specific class of interrupt, would throw a Priority 3 system error.
Not a big one. Not the kind of thing that would trip Janus's attention. Just a small, genuine, undeniable fault condition—the sort that a protocol-locked Compliance Hunter's lower subroutines were required to log.
Required. Not recommended. Not optional. Required.
Aaron's hand moved to his chest pocket, fingers finding the edge of the Null Phone by feel.
The Hunter took another heavy step forward, its blank visor fixed on Aaron, ignoring a ricochet from Kael's gun.
The Hunter took three more steps toward Aaron.
Not fast. Not slow. Metronomic.
Aaron watched the way its boots landed—each footfall placed with the kind of precision that wasn't learned, it was compiled. No wasted lateral shift. No micro-correction on the uneven floor grating. Every joint in that armored body moved along pre-calculated vectors, and the visor never, not for a single frame, drifted from Aaron's sternum.
It's not hunting. It's executing a retrieval script.
The distinction mattered. A hunter improvised. A script had edge cases.
Kael's rifle barked twice more from somewhere behind a server rack, the muzzle flash strobing white across the ceiling. Both rounds hit the Hunter's left pauldron and skipped off into the dark. The Hunter didn't flinch, didn't rotate, didn't even log the threat in any visible way. Kael might as well have been throwing gravel.
Rourke was circling wide to Aaron's left, low and quiet, looking for an angle that didn't exist.
Aaron took one step back, let his heel catch on a cable bundle snaking across the floor, and went down hard on one knee—not a fall, a performance of a fall, the kind of stumble that looked panicked enough to be real. His palm slapped the grating. The old cut on his hand screamed at the impact, dried blood cracking open at the edge.
The Hunter's pace didn't change.
Good. You don't care about my balance. You care about my position.
Aaron's free hand was already moving, fishing the Null Phone from his chest pocket. The screen was dark, the interface stripped to almost nothing, exactly as it should be—a dead slab of plastic and glass to any casual observer. To the System's monitoring sweep, it registered as a consumer-grade device with a cracked OS and a battery at four percent.
What it actually was, was a very precise scalpel.
He didn't point it at the Hunter. He pointed it at the server stack to his right—a squat, ancient unit, third row from the back wall, the one with the amber fault indicator that had been blinking an arrhythmic pattern since they'd entered the room. He'd clocked it the moment he walked in. Old firmware. Probably running a deprecated System integration layer that hadn't been properly deprecated, just abandoned mid-patch and left to wheeze along on legacy handshakes.
You're not a bug, he thought at it, almost affectionately. You're a gift.
He pushed one command through the Null Phone. Not an attack. Not a system overwrite. Just a single malformed packet, the digital equivalent of clearing your throat directly into a fire alarm.
The server stack detonated into light.
Not fire—light. Every status LED on the unit strobed simultaneously, amber and red and a sickly green that had no business existing in that color space, and the unit emitted a sound like a CRT television being dropped down a stairwell. The air around it shimmered. A System notification materialized above it in flickering red text, fragmented, half-rendered:
⚠ UNHANDLED EXCEPTION: NODE_SYNC_FAILURE — DIAGNOSTIC REQUIRED —
The Hunter's head snapped left.
The motion was violent enough that Aaron heard the servos in its neck housing whine under the angular velocity—a sound like a power drill catching on something it wasn't designed to cut through. The visor locked onto the blinking server stack with the totality of a compass finding north.
The body stopped.
Not paused. Stopped. Weight redistributed. One boot lifted half an inch off the grating and stayed there, suspended, while the rest of the Hunter became a statue in mid-stride.
There it is. Mandatory diagnostic interrupt. It literally cannot not look.
Aaron was already on his feet.
"Now!" he shouted, and the word wasn't for the Hunter—it was aimed over his shoulder, into the dark where Rourke and Kael were already moving on the edges of his peripheral vision, the command carrying every ounce of urgency he had without the luxury of explanation.
The server stack kept screaming its broken alert. The Hunter's visor stayed fixed on the malfunction, its chassis locked in that grotesque mid-step freeze, the amber fault light throwing jagged shadows across its faceplate in a stuttering rhythm.
One second.
Aaron counted it in his sternum—a single, compressed beat of time that felt enormous, the way all genuinely useful moments did.
Then the Hunter's head snapped back.
The visor found him instantly, zero search time, zero recalibration lag. The retrieval script resumed exactly where it had been interrupted, as if the last second had been surgically excised from its runtime.
Three steps away. Metronomic.
The exception had been logged. The distraction was over.