Armed with Ghost's database, Taeyang developed a new approach to dungeon breaking.
The problem with his previous runs had been inefficiency. He'd modified parameters without planning, spent SIP on improvements that didn't matter, and reached boss fights with depleted resources. The Mirrored Depths crash was the inevitable result of treating dungeons like playgrounds instead of optimization problems.
New rules for himself:
1. Scout before entering. Use Ghost's data to understand parameter sets in advance.
2. Budget SIP for the entire run. Boss fights got 60% minimum. Everything else shared the remaining 40%.
3. Modify only what matters. No quality-of-life improvements. No cosmetic changes. Every point spent on winning.
4. Exit before zero. Never push SIP below 10. Leave buffer for emergencies.
He tested the approach on a C-rank dungeon called "The Hollow Nest" — an insectoid nightmare that the Association rated as moderate difficulty. Ghost's database showed the parameter breakdown:
```
[C-RANK DUNGEON: The Hollow Nest]
[Monster Type: Swarm Insects (individual weak, overwhelming in numbers)]
[Environmental Hazard: Toxic Spore Clouds (DOT damage)]
[Boss: The Queen Mother (HP: 80,000, spawns reinforcements constantly)]
```
Swarm dungeon. The typical approach was bringing a team with AOE abilities to handle the numbers. Solo clearing was technically possible but required either extreme individual power or unconventional tactics.
Taeyang had unconventional tactics.
---
The dungeon entrance was a crack in a hillside outside Seoul, barely wide enough for a person to squeeze through. Inside, the narrow passage opened into a vast underground cavern system crawling with insects the size of cats.
His first instinct was to modify the insects' aggro ranges — standard opener. But he caught himself. That would cost maybe 3-4 points per insect, and there were hundreds of them. The math didn't work.
Think bigger. Think more efficiently.
He pulled up the environmental parameters:
```
[ENVIRONMENTAL PARAMETER: Toxic Spore Clouds]
[Coverage: 40% of dungeon area]
[Damage: 50 HP/second while exposed]
[Duration: Permanent until boss death]
```
The spore clouds were a handicap meant to pressure parties into quick clears. But they weren't selective. They affected everything in the dungeon — including the insects.
**[PARAMETER MODIFICATION DETECTED]**
**[Toxic Spore Clouds: Coverage changed from 40% to 100%]**
**[System Integrity Cost: 12 points]**
**[Remaining System Integrity: 88/100]**
The effect was immediate and devastating.
Yellow-green clouds rolled through the cavern like a chemical weapon. The insects shrieked — high-pitched chittering that echoed off stone walls — and started dying. Hundreds of them, all at once, their exoskeletons melting under toxin exposure they weren't designed to survive.
Taeyang had already modified himself:
**[Self-Modification: Toxin Immunity granted temporarily]**
**[System Integrity Cost: 8 points]**
**[Remaining: 80/100]**
He walked through the dying swarms like a god of plague. The toxin clouds found no purchase on his modified physiology. Insects that tried to attack withered before reaching him. The dungeon's primary threat had been turned into its executioner.
Twenty minutes later, he stood before the Queen Mother's chamber with 76 SIP remaining and a kill count in the thousands.
The boss was massive — a bloated insect queen the size of a small building, surrounded by larvae pods and soldier drones. Her HP was respectable but not exceptional. Her spawning ability was her real threat.
```
[BOSS: The Queen Mother]
[HP: 80,000]
[Spawning Rate: 10 soldiers every 30 seconds]
[Special: Pheromone Call — Summons all remaining insects in dungeon to boss chamber]
```
But there were no remaining insects. The toxin clouds had killed them all.
The Pheromone Call triggered anyway. Nothing came.
**[PARAMETER MODIFICATION DETECTED]**
**[Queen Mother: Spawning Rate changed from 10/30s to 0/30s]**
**[System Integrity Cost: 10 points]**
**[Remaining: 66/100]**
The larvae pods shriveled. The soldier drones collapsed mid-formation. The Queen Mother screamed — a psychic noise that vibrated through Taeyang's skull — but she couldn't regenerate her forces.
He killed her with a combination of [King's Authority] on her remaining guards and careful knife work on her exposed thorax. It took fifteen minutes.
**[BOSS DEFEATED]**
**[DUNGEON CLEARED: The Hollow Nest]**
**[Clear Time: 38 minutes]**
**[System Integrity Remaining: 66/100]**
Efficient. Controlled. Planned.
Taeyang collected the loot — decent C-rank materials plus a rare [Toxin Resistance] skill book worth 25 million won on the market — and exited the dungeon feeling, for the first time since the Mirrored Depths, like he knew what he was doing.
---
Over the next week, he cleared six more dungeons using the same methodology. Each run started with analysis. Each modification served a purpose. Each boss fight found him with SIP to spare.
His D-rank status meant the Association couldn't officially recognize his clears as valid rank progression, but they couldn't ignore the results either. A D-rank hunter clearing B-rank dungeons solo was impossible under normal circumstances. Under Taeyang's circumstances, it was becoming routine.
Ghost sent updates every few days. Information about new dungeons. Tips on parameter vulnerabilities. Warnings about Association surveillance increasing.
**[They're assigning a dedicated analyst to you, Breaker Boy. Someone named Yoo Mina. Numbers person. Very thorough. She'll be mapping your ability in detail.]**
Yoo Mina. Taeyang searched her name in the hunter database. Guild analyst for the Azure Phoenix guild, one of the top ten in Korea. Specialization: statistical analysis of dungeon clear patterns. Publication history: seventeen papers on hunter ability classification and combat optimization.
A numbers person. Someone who would look at his dungeon clears and see patterns he didn't know he was creating.
**[Should I be worried?]** he messaged back.
Ghost's response came with another inappropriate laugh:
**[She's not your enemy. Not yet anyway. She's curious. The Association wants answers about how you work. She wants to understand why you work. Different motives, different threats. I'd keep an eye on her though.]**
Keeping an eye on an analyst meant adjusting his approach. If Yoo Mina was mapping his patterns, he needed to make sure those patterns didn't give too much away.
Easier said than done. [Dungeon Break] left traces. Every modification registered in the System's logs. The Association might not be able to read those logs directly, but they could infer from results.
He needed to be less predictable.
---
His next dungeon was the "Scorched Hollows" — a B-rank fire dungeon in an abandoned factory district. Ghost's database showed the parameter breakdown:
```
[B-RANK DUNGEON: Scorched Hollows]
[Temperature: Extreme Heat (passive damage to non-fire-resistant hunters)]
[Monster Type: Fire Elementals (immune to heat, weak to water)]
[Boss: The Forge Lord (HP: 200,000, creates lava terrain)]
```
Standard approach: bring water abilities or heat-resistant equipment. Neither of which Taeyang had.
Unconventional approach: make the heat work for him.
He entered the dungeon at 6 AM on a Tuesday when the factory district was empty. The portal shimmered like a mirage, and stepping through felt like walking into an oven.
The interior was an industrial hellscape — factory machinery fused with volcanic rock, rivers of molten metal flowing through production lines that manufactured nothing. Fire elementals patrolled the corridors, humanoid shapes of living flame that left scorched footprints on the stone floor.
Taeyang's first modification was defensive:
**[Self-Modification: Heat Immunity granted temporarily]**
**[System Integrity Cost: 15 points]**
**[Remaining: 85/100]**
Expensive, but necessary. The passive heat damage would have killed him within minutes otherwise.
Second modification: environmental.
**[Temperature: Extreme Heat changed to Extreme Cold]**
**[System Integrity Cost: 18 points]**
**[Remaining: 67/100]**
The dungeon's atmosphere inverted. Heat became cold. Fire became ice. The fire elementals shrieked as their forms destabilized, flames sputtering against a sudden zero-degree environment they weren't designed to survive.
But — and this was the unpredictable part he'd planned — the rivers of molten metal didn't freeze. They solidified into twisted sculptures of frozen steel, creating terrain that no party could have navigated normally.
Taeyang had expected this. The temperature modification affected ambient conditions, not liquid matter with high thermal mass. The molten metal had enough residual heat to stay liquid for minutes even as the air turned frigid.
He used those minutes.
**[Monster Spawn Rate: Reduced to 0]**
**[System Integrity Cost: 8 points]**
**[Remaining: 59/100]**
**[Fire Elemental Base Damage: Reduced by 80%]**
**[System Integrity Cost: 10 points]**
**[Remaining: 49/100]**
By the time the metal rivers finally solidified — creating impassable barriers that sealed off half the dungeon's pathways — Taeyang had cleared the remaining elementals and reached the boss chamber with resources to spare.
The Forge Lord was exactly what Ghost's data described: a massive humanoid of molten iron and forge-flame, wielding a hammer that could reshape terrain with every strike.
```
[BOSS: The Forge Lord]
[HP: 200,000]
[Damage: 2000-3500 (Fire/Physical)]
[Special: Lava Field — Creates expanding lava zones around impact points]
[Special: Forge Strike — Channels power for 3 seconds, deals 10,000 damage in cone AOE]
```
The lava field was useless in a frozen environment. Lava couldn't form when the temperature was sixty degrees below zero.
The Forge Strike was the real threat. Ten thousand damage was lethal regardless of temperature.
Taeyang watched the boss for a full minute, letting it waste Forge Strikes on empty air while he mapped its attack patterns. The channel time was exactly three seconds. The recovery time was four. Seven seconds between strikes.
**[Forge Lord: Movement Speed reduced by 50%]**
**[System Integrity Cost: 12 points]**
**[Remaining: 37/100]**
The boss slowed to a crawl. Its Forge Strikes still hit hard, but they couldn't track a target that moved faster than it could turn.
Taeyang spent the next twenty minutes kiting the Forge Lord around its own chamber, landing knife strikes during every seven-second window, letting the cold environment drain its HP through thermal damage.
**[The Forge Lord: HP 0]**
**[BOSS DEFEATED]**
**[DUNGEON CLEARED: Scorched Hollows]**
**[Clear Time: 1 hour, 12 minutes]**
The loot was excellent — fire resistance equipment, rare crafting materials, a [Forge Hammer] weapon that was worth more than everything else combined.
Taeyang collected it all and exited the dungeon, stepping from frozen factory to warm Seoul morning.
His phone buzzed with a message from Ghost:
**[Clean run. The Association's analyst is going to have trouble reading that one. Mixing environmental and entity modifications throws off pattern recognition.]**
Then, a few seconds later:
**[But the System is watching too. And it doesn't use pattern recognition. It uses something else.]**
**[What?]** Taeyang replied.
Ghost's response was a link to an encrypted file. When Taeyang opened it, he found a single word:
**[Personalization.]**
No elaboration. No context.
Taeyang stared at the word for a long time, standing in the morning sun outside an abandoned factory, wondering what personalized countermeasures would look like.
He'd find out soon enough.
