The stairwell was pitch black. Marcus took the steps two at a time, flashlight beam bouncing off concrete walls. The Meridian was twelve stories — he was on the ground floor, which the tutorial said was the worst place to be during Integration. Ground floors became entry points for the first monster wave.

He needed to get to the roof.

The tutorial had been specific: during the first wave, System-standard creatures would spawn from ground level and move upward. High ground was temporary safety. But the real goal was reaching a Safe Zone before the second wave, which would be airborne.

Doors opened on every landing. Residents in pajamas and bathrobes, bleary-eyed, clutching dead phones.

"What's happening?" A woman on the fourth floor, clutching a toddler. "The power—"

"Get to the highest floor you can. Lock the doors. Don't go outside until dawn." Marcus didn't stop moving. He couldn't save everyone. The math was brutal and simple: explain, and die with them; move, and survive to help later.

Guilt would come later. Right now, survival came first.

[TIME UNTIL FIRST WAVE: 00:02:11]

He hit the roof access door — locked. His security keycard was useless without power. He kicked the door. Once, twice, three times. Pain shot through his ankle, but the lock mechanism — cheap, like everything in this building — bent and gave.

Cold air hit his face. November, 4:51 AM. The city below was completely dark — no streetlights, no car headlights, no glow from a million screens. Just darkness and the sound of confusion and fear rising from seven million people who'd just lost the modern world.

Then the ground cracked open.

Not everywhere — at specific points across the city, marked by pillars of red light that shot up from the pavement like reverse lightning. Marcus counted six visible from the rooftop. The tutorial called them "Emergence Points." From each one, shapes began to crawl out.

[FIRST WAVE: INITIATED] [CREATURE TYPE: GUTTER CRAWLERS (LEVEL 1-3)] [ESTIMATED DENSITY: 1 PER 50 METERS IN URBAN ZONES] [RECOMMENDED ACTION: AVOID OR ELIMINATE]

Marcus looked down. In the parking lot below, something pulled itself out of a crack in the asphalt. It was roughly the size of a large dog, but wrong — too many legs, no eyes, a mouth that opened sideways instead of up and down. Its skin was the color of spoiled meat, and it moved with the twitchy, mechanical precision of an insect.

A Gutter Crawler. Level 2, according to the tag floating above its head — visible only to him, because he'd completed the tutorial and had Full Attribute Visibility.

[GUTTER CRAWLER — LEVEL 2] [HP: 45/45 | ATK: 8 | DEF: 3 | SPD: 12] [WEAKNESS: BLUNT FORCE | FIRE] [BEHAVIOR: AGGRESSIVE — ATTACKS ON SIGHT]

Three more emerged from the crack. Then five more. Then ten. They fanned out across the parking lot, moving toward the building's ground-floor entrances.

Below him, Marcus could hear glass breaking. Screaming. The fourth-floor woman with the toddler — had she gone up or stayed?

Focus. He couldn't fight those things — not yet. His stats were baseline human, and a security baton against a creature with 45 HP was a losing bet.

But the tutorial had given him one free Uncommon skill selection.

[SKILL SELECTION AVAILABLE] [CHOOSE ONE UNCOMMON-TIER SKILL:] [1. POWER STRIKE — 150% DAMAGE ON NEXT MELEE ATTACK. COOLDOWN: 30S] [2. MANA BOLT — RANGED ENERGY PROJECTILE. DAMAGE: INT x 2. COST: 10 MANA] [3. QUICK STEP — DASH 5M IN ANY DIRECTION. COOLDOWN: 15S] [4. ANALYZE — REVEAL DETAILED INFORMATION ABOUT ANY TARGET. NO COOLDOWN. PASSIVE.] [5. IRON SKIN — REDUCE INCOMING DAMAGE BY 20% FOR 10S. COOLDOWN: 60S]

Most people would pick Power Strike or Mana Bolt. Damage skills. Flashy. Immediately useful.

Marcus picked Analyze.

[SKILL ACQUIRED: ANALYZE (UNCOMMON)] [PASSIVE ABILITY — ALWAYS ACTIVE] [REVEALS: FULL STAT BLOCK, WEAKNESSES, HIDDEN ATTRIBUTES, BEHAVIORAL PATTERNS] [UPGRADE PATH: AVAILABLE AT SKILL LEVEL 5, 10, 15...]

Not a combat skill. An information skill. The kind of skill that speedrunners and theorycrafters lived for — it didn't help you fight, but it told you exactly how to fight. Every enemy, every item, every player. Full information, all the time.

Combined with the tutorial's "System Limitations" section, Marcus had just built the foundation of his entire strategy: he wasn't going to outfight the apocalypse. He was going to out-think it.

He turned his Analyze on himself.

[MARCUS COLE — LEVEL 1] [CLASS: PENDING (24H SELECTION WINDOW)] [HP: 100/100 | MP: 50/50] [STR: 8 | DEX: 10 | INT: 14 | WIS: 12 | CON: 9 | CHA: 7]

[SKILLS: ANALYZE (UNCOMMON, LV.1)] [ACHIEVEMENTS: THE DILIGENT (+5% EXP)] [HIDDEN ATTRIBUTE: TUTORIAL COMPLETION — SYSTEM SHOP ACCESS (BASIC)]

INT 14 — that was higher than average. Years of reading, studying, analyzing. The System had mapped his real-world cognitive skills onto its attribute framework.

But STR 8 and CON 9 meant he was physically below average. A fair fight with even a Level 1 Gutter Crawler was risky.

So don't fight fair.

Marcus looked around the rooftop. Air conditioning units. A water tank. Maintenance tools left in a rusted box — a wrench, a hammer, a coil of heavy chain.

The hammer. Blunt force — the Crawlers' weakness.

He picked it up and felt it settle into his hand. The System recognized the action.

[EQUIPMENT: MAINTENANCE HAMMER (IMPROVISED WEAPON)] [DAMAGE: STR x 1.2 | TYPE: BLUNT] [BONUS: +50% DAMAGE VS CREATURES WEAK TO BLUNT]

He ran the math in his head. STR 8 x 1.2 = 9.6 base damage, plus 50% bonus against Crawlers = 14.4 per hit. The Level 2 Crawlers had 45 HP and 3 DEF. Effective damage: 11.4 per hit. Four hits to kill.

Not great. But the rooftop door was a chokepoint. One at a time, four hits each. Manageable — if he didn't get swarmed.

The sound of claws on concrete echoed up the stairwell. They'd found the building.

Marcus positioned himself beside the roof access door, hammer raised, back to the wall. His heart was jackhammering. His hands were slick with sweat.

The door burst open. The first Crawler scrambled through — and Marcus brought the hammer down on its head with everything he had.

[CRITICAL HIT! — 22 DAMAGE] [GUTTER CRAWLER HP: 23/45]

The creature shrieked — a sound like metal scraping glass — and spun toward him. He swung again. Missed. It lunged, mandibles snapping, and caught his forearm.

[DAMAGE RECEIVED: 5 HP] [HP: 95/100]

Pain. Real, screaming pain, not game-pain. Blood ran down his arm. But the creature was clinging to him, its weight pulling his arm down, and that gave him an angle —

Hammer. Skull. Crunch.

[GUTTER CRAWLER ELIMINATED] [+15 EXP (+5% BONUS: 15.75 EXP)] [LOOT: CRAWLER FANG x1]

He kicked the body off the edge of the roof and turned to face the door. Two more Crawlers were coming through.

Marcus fought. It was ugly, desperate, nothing like the clean combat of video games. He took hits — DEF 0 meant every attack landed full force. But the chokepoint held. One at a time, four swings each, hammer rising and falling in the darkness.

Six Crawlers dead. Level 1 achieved.

[LEVEL UP! MARCUS COLE — LEVEL 2] [+10 HP | +5 MP | +2 FREE ATTRIBUTE POINTS] [ALLOCATE POINTS NOW?]

He put both points into DEX. Speed and accuracy mattered more than raw strength when you were fighting in a doorway.

More were coming. He could hear them in the stairwell — dozens, climbing from the broken ground-floor windows.

But dawn was coming too. The eastern sky was turning grey. And according to the tutorial, Gutter Crawlers went dormant in daylight.

Marcus tightened his grip on the blood-slicked hammer and waited for sunrise.

He'd survived the first wave. The hard part was just beginning.