Zion kept the boss catalog open for a long time.
Floor 2 already had a clear identity.
The slimes punished parties that relied too heavily on piercing weapons, while the Mana Leech Crystals made repeated fire magic increasingly expensive.
Whatever he placed at the end of the floor needed to support that design without simply repeating it.
Several larger slime variants appeared almost immediately.
[Greater Slime]
[Acid Slime]
[Armored Slime]
[Venom Slime]
[Split-Core Slime]
Zion opened a few of them out of curiosity, but none held his attention for long.
Some were larger, others had stronger resistances or additional effects, but they were still slimes.
More importantly, every one of them retained some degree of weakness to fire and that bothered him.
A party that entered Floor 2 prepared with fire-enchanted weapons, fire spells, and plenty of mana restoration would already have an advantage against most of the floor.
Giving them another slime at the end would only reward them for bringing the same answer all the way through.
He wanted the opposite.
If a party prepared specifically to counter the slimes, then the boss should make that preparation less useful.
It didn’t need to completely invalidate what they had brought, but it should force them to adjust instead of repeating the same strategy one more time.
He closed the slime category and returned to the Sulfur Field compatibility list.
[Compatible with: Ooze, Insect, Reptile, Earth]
His attention stopped on Reptile.
The terrain preview had included several lizard-type creatures when he first purchased it, and Zion remembered ignoring them because he’d already decided on slimes.
Now he opened the reptile boss category instead.
The list was much larger than he expected.
Apparently, lizards were popular.
There were horned lizards, venom lizards, armored lizards, burrowing lizards, crystal-backed lizards, several varieties that seemed unnecessarily large, and at least one whose description warned that it occasionally ate smaller allied monsters.
Zion skipped that one.
A boss that ate the other monsters sounded stupid.
He didn’t have to scroll far before something else caught his attention.
[Emberback Salamander]
[Rank: F Boss]
[Affinity: Fire, Reptile]
[High Resistance: Fire]
[Abilities: Flame Breath, Heated Scales, Wall Cling]
[Cost: 340 Essence]
He opened the preview.
A thick-bodied lizard appeared across the sulfur stone, its dark scales split by glowing orange lines along its back.
Smoke escaped from its nostrils whenever it breathed, and the creature’s broad claws looked capable of gripping almost any surface.
It fit the terrain perfectly.
It also breathed fire.
Zion almost purchased it immediately.
A fire-resistant boss at the end of a floor filled with fire-weak slimes sounded exactly like the kind of reversal he wanted.
Anyone who spent the entire floor relying on fire magic would reach the boss only to discover that their favorite solution suddenly did almost nothing.
He rotated the preview and started imagining the fight.
“Wait.”
There was another possibility.
Zion thought about the adventurers he’d watched throughout the previous day.
Most fought whatever appeared directly in front of them, but some were much more deliberate.
They tested monster behavior, manipulated positioning, pulled enemies away from groups, and sometimes used one encounter to interfere with another.
A clever enough party might realize the Emberback Salamander breathed fire.
Then they could stop killing the slimes.
He stared at the boss preview.
If the party gathered enough of them and dragged the entire group toward the boss room, one well-positioned breath attack could potentially melt half the floor for them.
The image formed far too easily.
A tank ran into the boss room with a trail of slimes behind him.
The Emberback Salamander inhaled.
Everyone moved aside.
One breath later, his carefully placed six-essence monsters became puddles.
“No.
That would be too easy.”
He closed the preview.
He had spent too much time hiding those slimes on ceilings to let his own boss kill them.
The idea itself was still good, though.
He wanted a boss that resisted the exact damage type most effective against the rest of the floor.
It just needed to do that without conveniently providing the same damage to the adventurers.
Zion filtered the list by fire resistance.
Several options disappeared, shortening the list quite a bit.
Then he noticed another lizard.
[Tidepool Basilisk]
[Rank: F Boss]
[Affinity: Water, Reptile]
[Fire Resistance: Extreme]
[Abilities: Water Jet, Crushing Bite, Surface Grip, Pool Leap]
[Environmental Preference: Pools, Wet Stone, Mineral Caverns]
[Cost: 375 Essence]
He opened the preview.
The creature was lower to the ground than the Emberback Salamander but much wider, with a heavy body covered in smooth blue-gray scales.
Pale fins ran from the back of its skull to the base of its tail, and its claws were long enough to hook into stone.
The description made its resistance even better than he expected.
Fire attacks weren’t completely useless, but close enough.
That solved one problem immediately.
A party could spend the entire floor burning through slimes only to reach a boss that barely cared about the element they’d prepared around.
Then the Pool Leap ability caught his attention.
Zion opened the terrain editor and created a temporary boss chamber.
The first version was too open.
He deleted it.
The second looked better.
Instead of a normal stone arena, Zion carved several deep sulfur pools into the chamber floor and left only irregular sections of solid ground between them.
Thick mineral formations rose near the walls, while jagged rock columns divided the room into uneven sections.
He placed the Tidepool Basilisk inside.
The creature immediately entered one of the pools.
He watched its body disappear beneath the cloudy yellow water before reappearing several meters away in another.
“Oh, that’s annoying.”
He liked it.
The pools restricted where adventurers could stand while giving the basilisk routes through the arena that the party couldn’t easily follow.
A tank trying to hold its attention near one edge could watch it disappear underwater and emerge beside the backline instead.
Zion added more variation to the room.
He narrowed some of the safe ground and widened other sections enough for a party to regroup.
The pools were placed close enough that the basilisk could jump between them, but not so densely that adventurers had no room to fight at all.
Then he added the rock formations.
The creature’s Surface Grip allowed it to climb, so there was no reason to keep the arena flat.
He raised jagged shelves along two walls and added several thick stone formations high enough that the basilisk could climb above the party before dropping back into another part of the room.
The arena became much less comfortable almost immediately.
Adventurers would need to watch the pools, the walls, and the limited ground around them at the same time.
A fire-heavy party would still have plenty of tools for reaching the boss, but their strongest elemental advantage would be mostly gone.
“That’s much better.”
He purchased the boss.
[Purchase Tidepool Basilisk — 375 Essence?]
“Yes.”
[Purchase complete.]
[Tidepool Basilisk assigned as Floor 2 Boss.]
He watched the creature settle into the largest sulfur pool and felt considerably better about the floor.
The slimes punished the most common weapon types he’d seen.
While fire magic answered the slimes, the Mana Leech Crystals made relying on it expensive.
Anyone who reached the end after preparing heavily around fire would then meet a boss that resisted it almost completely.
None of the individual pieces were overwhelmingly strong, but together, they created problems.
Zion liked that.
He spent the next several minutes inspecting Floor 2 from the entrance onward.
He followed each branching route, checked the ceiling-slime positions, adjusted two Mana Leech Crystals that were slightly too visible, and confirmed that the Tidepool Basilisk could use every pool and climbing surface inside its arena.
Everything seemed ready, well…almost.
His attention stopped on the Hidden Cache.
Zion had placed it inside a narrow side passage and stocked it with rewards slightly better than the ones available on Floor 1.
At the time, hiding the chest had seemed like enough.
Now he knew better.
The first party that found it would return to town and tell everyone exactly where it was.
By the next morning, every adventurer entering Floor 2 would walk directly toward the same side passage.
It wouldn’t be hidden anymore.
Zion opened the cache settings.
There were more options than he remembered.
[Hidden Cache]
[Assigned Floor: 2]
[Current Spawn Location: 1]
[Configure Spawn Locations]
He selected the final option.
A map of Floor 2 appeared, allowing him to mark multiple possible locations.
The cache could choose randomly between them whenever the floor instance reset.
“Oh!” he said, immediately adding new spots.
One behind a mineral formation near the shorter route.
Another beneath an overhang near the sulfur vents.
A third at the end of a dead passage that looked decorative enough to ignore.
By the time he finished, the cache had eight possible locations scattered across the floor.
“That’s much better.”
Someone could still tell other adventurers where they found it, but that knowledge would only narrow down one possibility rather than reveal the answer permanently.
Zion was about to close the settings when another option appeared beneath the spawn configuration.
[Advanced Cache Modifier]
[Mimic Chance]
He paused.
Mimic?
[Allows designated Hidden Cache to manifest as a Mimic according to assigned probability.]
[Mimic strength scales with floor classification.]
[Additional activation cost required.]
For several seconds, Zion simply stared at the description.
The chest could move.
Worse, it could bite people.
He opened the probability settings.
[Current Mimic Chance: 0%]
Zion slowly increased the number.
Five percent.
Then ten.
He imagined an adventurer spending twenty minutes searching through sulfur fumes, finding the hidden passage, spotting the chest at the end, and running toward it with complete confidence.
Only for the chest to grow teeth.
Zion increased the slider again.
Then stopped himself.
He stared at the number, lost in thought.
Maybe there was such a thing as too much.
He lowered it again and continued looking at the setting, trying to decide exactly how often disappointment should become violence.