The Aethervale

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The Processing Plant

The Processing Plant

The Processing Plant (Level 4)

Overview

A brutal, industrialized vertical dungeon located in the heart of Steamfort's lower levels. The Processing Plant is controlled by the local Syndicate and is used to grind down raw Aether-ore (and occasionally, political rivals) into usable magical dust. The environment is loud, incredibly hot, and filled with massive, crushing machinery. The players are likely infiltrating to rescue a hostage, steal refined Aether, or sabotage the Syndicate's operation.

Environmental Hazards & Gimmicks

  • The Furnace Vents: The plant is powered by a massive central furnace. Every 3 rounds (on initiative count 20), the furnace vents excess heat and steam. A massive wave of fire sweeps through specific areas of the map. Anyone not standing behind solid, structural cover takes 4d6 fire damage (DC 14 Dexterity save for half).
  • Deafening Noise: The grinding of gears and pistons is constant. Perception checks relying on hearing automatically fail. Spells with verbal components have a 10% chance of failing unless the caster shouts at the top of their lungs (giving away their position).
  • Moving Terrain: Many floors are actually massive conveyor belts. Ending a turn on a conveyor belt moves the character 15 feet in the direction of the belt.

Key Locations/Rooms

1. The Ore Chutes

  • Description: The party enters by sliding down massive metal chutes used for dumping raw ore. They land in a sorting room filled with piles of jagged, glowing blue rocks.
  • Sensory: The smell of sulfur and burning coal. The screeching of metal on metal.
  • Mechanic/Trap: The room is littered with volatile raw Aether. If an attack misses and hits a pile of ore (or if a fire/lightning spell is used), the pile explodes in a 10-foot radius, dealing 3d6 force damage.
  • Encounter: 4 Syndicate Thugs and 1 Half-Ogre foreman are sorting ore. They use the explosive piles to their advantage, throwing them at the party.

2. The Grinding Gears

  • Description: A massive, vertical shaft. The only way up is to platform across a series of gigantic, rotating cogs and pistons.
  • Sensory: Heat rising from below, the dizzying spin of the machinery.
  • Mechanic: Moving across the gears requires acrobatics.
    • Small Gears: Safe to stand on, rotate slowly.
    • Large Gears: Rotate quickly. If a player ends their turn on one, they must make a DC 13 Dex save or be thrown off the edge (taking falling damage).
    • Crushing Pistons: Every other round, massive pistons slam together. Players caught between them take 6d10 bludgeoning damage. Players must time their jumps perfectly.
  • Encounter: Syndicate Snipers (Scouts) take potshots at the party from high catwalks while they navigate the gears.

3. The Acid Wash

  • Description: A processing room filled with deep vats of bubbling, highly corrosive green acid used to strip impurities from the ore. A narrow metal walkway crosses the vats.
  • Sensory: The air burns the eyes and throat. The acid hisses and pops.
  • Mechanic/Trap: The walkway is rusted and slick with chemical condensation. Moving more than half speed requires a DC 14 Acrobatics check to avoid slipping.
  • Monsters: 2 Black Puddings have formed from the chemical runoff. They cling to the underside of the walkway and attempt to grapple players, dragging them into the acid vats (taking 4d6 acid damage per turn while submerged).

4. The Control Room

  • Description: A suspended glass booth overlooking the main factory floor. It is filled with levers, pressure gauges, and speaking tubes.
  • Sensory: The glass mutes the noise slightly, providing a momentary reprieve.
  • Mechanic: Players can lock themselves in and use the controls to manipulate the factory floor below (e.g., reversing the conveyor belts, turning off the furnace vents, or dropping heavy crates).
  • Trap: The door locks behind them, and the room begins to fill with toxic gas. The players have 4 rounds to hack the complex lock mechanism (Requires three successful DC 15 Thieves' Tools or Arcana checks) before they fall unconscious.

5. The Incinerator Core (Boss Encounter)

  • Description: The lowest level of the plant. A massive, roaring furnace dominates the back wall. The floor is an intersection of four high-speed conveyor belts all feeding directly into the flames.
  • The Boss: "Ironjaw" Kael, the Syndicate Enforcer (Use a Gladiator stat block, but he wears a mechanical power-suit that grants AC 18 and a heavy mechanical claw attack).
  • Boss Mechanics:
    • The Belts: The conveyor belts are moving at high speed toward the furnace. Any player ending their turn on a belt is moved 20 feet toward the fire. If they enter the furnace, they take 10d6 fire damage.
    • Magnetic Grapple: Ironjaw's claw can fire as a projectile (Range 30ft). If he hits, he pulls the player to him, usually dropping them onto a conveyor belt.
    • Overdrive: At half health, Ironjaw smashes a raw Aether crystal into his suit's reactor. He gains Haste, but the suit will violently explode when he dies (20-foot radius, 6d6 fire damage).
  • Loot: Ironjaw's mechanical gauntlet (Gauntlet of Ogre Power, requires attunement), and a lockbox containing 3 vials of highly refined, weaponized Aether.