The Eastgate Shopping Mall looked exactly like it had three days ago — if you ignored the translucent blue barrier shimmering across the main entrance like a vertical lake, and the thirty-foot dungeon portal marker floating above it in luminous gold text:

``` [EMERGENCE DUNGEON: EASTGATE] LEVEL RANGE: 3-7 FLOORS: 3 PARTY LIMIT: 6 STATUS: UNCLAIMED ENTER? [Y/N] ```

"That's not ominous at all," Maya said, adjusting the backpack full of medical supplies they'd salvaged from the pharmacy.

Ethan studied the entrance. His ERROR interface was overlaying additional data — things the standard display clearly wasn't showing:

``` ⚠ ERROR ACCESS — HIDDEN DATA: Floor 1: Standard clear (Rift Hounds + Blight Rats) Floor 2: Boss — [SPINE CRAWLER, Lvl 7] → Hidden room behind NE false wall → Requires: destroy wall support (3 strikes) Floor 3: Final boss — [MALL GUARDIAN, Lvl 8] → Exploit: power core exposed during charge attack → Window: 1.2s ```

"I can see the layout," he said. "Three floors. First is grunt-level stuff — Rift Hounds and rats. Second has a mini-boss and the hidden room. Third is the final boss."

"You can see all that?" Maya peered at the barrier. "I just see 'Enter Y/N' and a strong urge to pick N."

"N is for people without cheat codes." He gave her a crooked grin. "Ready?"

"I was born ready." She paused. "That's a lie. I was born screaming and covered in fluids. But I'm as ready as I'm going to get."

They stepped through the barrier.

---

The dungeon had transformed the mall's interior into something out of a fever dream.

Where there had been a food court, there was now a cavernous stone hall, the ceiling lost in shadow. Where Claire's Accessories used to sell earrings to teenagers, a corridor of rough-hewn rock stretched into darkness. The floor was covered in a thin layer of mist that glowed faintly blue — the same blue as the barrier outside.

But the bones of the mall were still visible. A Starbucks sign hung crooked above what was now a monster den. The escalator to the second floor still existed, but its steps had been replaced by stone, and something had carved runes into the handrail.

"The System just... redecorated," Ethan muttered.

"Worst interior designer ever," Maya agreed.

The first pack of Rift Hounds found them thirty seconds in.

Four of them, Level 3 and 4, emerging from what used to be a shoe store. Ethan's panel lit up instantly — weak points, attack patterns, the two-second turn delay he'd already memorized.

He'd leveled up during the pharmacy fight. Level 5 now, with the improved Exploit Window skill. The 0.5-second freeze was small, but in a fight, half a second was eternity.

"Two left, two right," he called out. "I'll take left. You—"

"I'm a *healer*, Ethan."

"Right. Stay back, keep me alive." He rolled his shoulder — still sore despite Maya's healing — and raised the crowbar.

The first Hound lunged. He triggered Exploit Window at the apex of its leap — the creature froze mid-air for half a heartbeat, momentum killed, hanging in space like a glitching video. He sidestepped and brought the crowbar down on the back of its skull.

Clean kill. The freezing trick was getting easier to time, like learning to hit a fastball — read the windup, anticipate the pitch, swing.

The second Hound was smarter. It circled, trying to flank. Ethan let it come, backing toward a pillar, forcing it into a narrow approach. When it lunged, he used the pillar as cover — the Hound crashed into stone, stunned, and he finished it with two strikes.

The other two went for Maya.

"Ethan!"

He sprinted. Too far. The Hound closest to Maya snapped its jaws — she threw a bottle of rubbing alcohol in its face, and the creature recoiled, snarling, blinded by the fumes. The second Hound leaped—

Ethan activated Exploit Window at range, something he hadn't tried before. His vision narrowed. He *reached* for the system lag in the creature's code—

It worked. The Hound froze inches from Maya's face, teeth bared, saliva dripping, suspended in broken time.

He crossed the distance in three strides and demolished it.

``` [RIFT HOUND x4 DEFEATED] XP: +52 ```

Maya was sitting on the floor, breathing hard. The alcohol bottle had shattered. Her hands shook.

"I need a weapon," she said. "Something besides medical supplies."

"Agreed. That's one of the reasons we're here." He helped her up. "The hidden room on Floor 2 — my interface says there's equipment in there. Real equipment, not improvised crap."

They pushed deeper.

---

Floor 2 was different. The mist was thicker, tinted red, and the walls pulsed with a faint organic rhythm — like the dungeon had a heartbeat. The corridors twisted in ways that the original mall layout shouldn't have allowed. Ethan's minimap showed impossible geometry — rooms that overlapped, hallways that doubled back through themselves.

The Spine Crawler found them in what used to be the electronics department.

It was big. Refrigerator-big. A centipede-like creature with armored plates along its body and legs that ended in bone-white hooks. It hung from the ceiling, watching them with compound eyes that reflected light like oil on water.

``` [SPINE CRAWLER — Lvl 7] HP: 280/280 ARMOR: Heavy (reduce physical damage by 60%) WEAKNESS: Joint segments between armor plates Underbelly during ceiling-to-floor transition EXPLOIT: Drops from ceiling before charging → 1.8s vulnerability window during landing ```

"That's the mini-boss," Ethan whispered.

"It's very mini," Maya whispered back. "As in, it's very much going to miniaturize us into paste."

The Crawler dropped.

Ethan shoved Maya sideways and dove the other direction. The creature hit the ground like a wrecking ball — tile shattered, dust erupted, and its armored body coiled for a charge.

1.8 seconds. He counted.

*One—*

He sprinted toward it, angling for the joints between its armor plates — thin seams of exposed flesh visible only because his panel highlighted them in pulsing red.

*Two—*

The crowbar found the seam between the third and fourth segment. He drove it in, twisted, pulled. The Crawler shrieked — a sound like metal scraping glass — and whipped its body around.

Ethan was thrown. He hit a display case — glass shattered, cutting through his jacket. Pain flared across his back.

"Ethan!" Maya ran to him, hands already glowing gold. The healing warmth spread through the cuts, stopping the bleeding.

"I'm fine. The armor's too thick for the crowbar. I need to exploit the joints, but it only gives me 1.8 seconds per drop."

"Then make it drop again."

He looked at her. "How?"

Maya pointed up. The ceiling was drop-tile above the Crawler's current position — but twenty feet to the left, a section of the old ventilation system hung exposed, heavy metal ductwork sagging from corroded brackets.

"Bait it under the ducts. Pull the brackets. The weight forces it down. You get your window."

Ethan stared at her. "You're supposed to be the healer."

"Healers understand anatomy. And architecture is just anatomy for buildings." She almost smiled. "Go."

He went.

It took two more rounds of bait-and-dodge to maneuver the Spine Crawler under the ventilation ducts. Each time it charged, he ran. Each time it missed, it crashed into walls and pillars, growing more enraged, less precise.

When it was finally positioned — directly beneath three hundred pounds of rusted ductwork — Ethan triggered Exploit Window on the brackets themselves.

His skill shouldn't have worked on objects. The old version couldn't. But Rank 2 had changed the rules: *Can now target SYSTEM OBJECTS.*

The brackets froze — then shattered. The duct came down with a shriek of tortured metal, slamming the Crawler flat. It writhed, pinned, belly exposed.

Ethan didn't waste a second. He drove the crowbar into the soft underbelly — once, twice, three times — each strike draining the HP bar in chunks.

The Crawler convulsed, screamed, and dissolved.

``` [SPINE CRAWLER DEFEATED] XP: +120 LEVEL UP! → Level 6 SKILL UPGRADE: [EXPLOIT WINDOW - RANK 3] → Freeze duration: 0.8s → Can target SYSTEM OBJECTS + ENTITY SKILLS ```

Ethan collapsed against the wall. Everything hurt. His arms felt like they belonged to someone else.

But directly behind where the Crawler had been — exactly where his ERROR panel indicated — the northeast wall had a hairline crack running through it. A false wall. Three structural supports, each marked with a glowing red target.

"There," he breathed. "The hidden room."

---

Three strikes. Three supports shattered. The wall crumbled inward, revealing a chamber that the System had clearly not intended anyone to find.

The room was small — the size of a walk-in closet. No monsters, no traps. Just three items sitting on stone pedestals, each encased in a glass-like energy field.

Ethan's panel identified them instantly:

``` [HIDDEN CACHE — ERROR ACCESS REQUIRED]

Item 1: [FRACTURE BLADE] → Melee weapon, Level 5+ → Passive: bonus damage to armored enemies → Hidden stat: +15% crit vs SYSTEM ENTITIES

Item 2: [MEDIC'S RESONANCE RING] → Healer accessory → +30% healing output → Passive: auto-heal party below 20% HP

Item 3: [SYSTEM FRAGMENT — ORIGIN CODE] → ??? → Description: [CLASSIFIED] → ERROR NOTE: This may contain information about the System's original architecture. HANDLE WITH CAUTION. ```

Ethan reached for the Fracture Blade first. The energy field dissolved at his touch — ERROR access, apparently. The blade was short, about the length of his forearm, single-edged, dark metal that seemed to absorb light rather than reflect it. It was light. It was sharp. It was the first real weapon he'd held since Day Zero.

He handed the ring to Maya. "Healer gear."

She slipped it on. The gold glow in her hands intensified — brighter, steadier. "That's... significant."

The third item — the System Fragment — he pocketed without examining further. His interface was flashing warnings:

``` ⚠ SYSTEM INTEGRITY ALERT: LVL 3 UNAUTHORIZED ACCESS: HIDDEN CACHE ANOMALY ACTIVITY ESCALATING CORRECTION PROBABILITY: 4.7% ```

The probability was climbing. Every time he used ERROR to access things the System wanted hidden, the number ticked up. Like an antivirus slowly waking up, zeroing in on a rogue process.

"We should move," he said. "Floor 3. The faster we clear this, the faster we get out."

Maya looked at him. At the blade in his hand, the ring on her finger, the pocket where he'd stashed something clearly dangerous.

"Ethan," she said quietly. "What happens when that percentage hits a hundred?"

He met her eyes. Honest answer.

"I don't know. But I'd rather find out at Level 10 than Level 5."

She nodded. Not happy. Not reassured. But present.

They walked toward the stairs to Floor 3, armed with stolen weapons and borrowed time.