Corrosive Sludge Pump
 Unlocked through an assignment
| ||||||||
|---|---|---|---|---|---|---|---|---|
Requires Driller  18
Purchased for:
|
| “ |
The Corrosive Sludge Pump is what happens when the maintenance staff are left with too much time on their hands. A complicated network of piping, distillation bottles, and safety valves results in a very capable device indeed - lobbing globs of toxic waste at those you disapprove of has never been so fun! |
| — Item Description |
The Corrosive Sludge Pump is an unlockable primary weapon for the Driller. It is a large sludge dispenser that fires corrosive sludge, capable of melting enemies. It consists of a number of pipes and valves wrapped around a fuel tank with a nozzle.
The Sludge Pump has two firing modes; Tapping the fire button will fire a single fragment of sludge whereas holding the fire button and releasing will fire a sludge bomb that causes several fragments to fly out upon impact.
When a corrosive projectile impacts an enemy, that enemy becomes visibly coated with sludge and takes damage over time (DoT). When the projectile impacts a surface, it creates a corrosive puddle that causes DoT to any enemy walking over it, along with slowing them down.
Modifications
There are five tiers of modifications and each tier has two to three upgrades. Only one modification can be equipped per tier.
| Corrosive Sludge Pump Modifications | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mod | Effect | In Game Description | Price | |||||||||
| Tier 1 |  High Capacity Tanks |
+20 Tank Size | "The good thing about clips, magazines, ammo drums, fuel tanks ...you can always get bigger variants." |
| ||||||||
 Better Air Pressurizer |
+40% Projectile Velocity | "The air pressurizer is improved, making the projectiles travel faster and further." |
| |||||||||
 Air Sensitive Compound |
+ Bigger Puddles
(x1.1 Normal Puddle Size) |
"When the goo is exposed to air it expands, making puddles cover a larger area on impact." |
| |||||||||
| Tier 2 4
|
 Dyse Nozzle |
+24 Charged Splash Damage | "With the Dyse Nozzle your charged shot is launched with more force, making it damaging on impact." |
| ||||||||
Atomizer Nozzle |
+4 Charged Fragment Count | "With the Atomizer Nozzle your charged shot will leave behind more fragments on impact." |
| |||||||||
 Potent Goo Mix |
+8 Normal Shot Damage | "Normal shots do more damage on impact." |
| |||||||||
| Tier 3 8
|
 Supersaturation |
+2 Effects Duration, +6 Puddle Lifespan | "The goo goes through a process of supersaturation after impact, making the effects and puddles last longer." |
| ||||||||
 More Goo Canisters |
+40 Max Ammo | "You had to give up some sandwich-storage, but your total ammo capacity is increased!" |
| |||||||||
| Tier 4 12
|
 Spillback Extension |
-1 Charge Cost | "With the Spillback Extension added to the nozzle you spend less goo when charging." |
| ||||||||
 Improved Spooling Mechanism |
-60% Charge Time | "The spooling mechanism has been improved and can get you to a full charge faster!" |
| |||||||||
| Tier 5 16
|
 Protein Disruption Mix |
+Stronger Slowdown Effect | "Disrupting the protein molecules in the goo mix has made it more rigid and harder for creatures to move through." |
| ||||||||
 Fluoroantimonic Acid |
+Stronger Corrosive DoT | "A new and improved goo recipe with very aggressive properties makes every second in it more hellish!" |
| |||||||||
Overclocks
Overclock calculations happen after modifiers.
 Corrosive Sludge Pump [Expand/Collapse]
| |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Overclock | Effect | In Game Description | Price | ||||||||
Hydrogen Ion Additive
  |
 +0.5 Direct Hit Corrosive Damage
|
"Experimental additive that activates on impact gives a small improvement to the corrosive DoT and slowdown effect of direct hits." |
| ||||||||
AG Mixture
 |
|
"Anti-gravity pellets suspended in the sludge let the projectiles fly further and faster." |
| ||||||||
Volatile Impact Mixture
  |
|
"Special mixture greatly increases immediate projectile damage. However the volatile compound evaporates quicker, reducing the duration of the corrosive and slowdown effects as well as the puddle lifetime." |
| ||||||||
Disperser Compound
 |
|
"Charged shots break apart into more fragments on impact and each fragment is more potent, however the initial damage of the charged projectile impact is reduced." |
| ||||||||
Combustive Goo Mix
 |
|
"Adding ammonium nitrate to the sludge mixture makes it explode when exposed to high temperatures. This new sludge mix has a thinner consistency, increasing the ammo cost of the pump's charged shot. It also smells even worse." |
| ||||||||
Goo Bomber Special
  |
|
"The addition of finely tuned timed separation compounds cause the charged shots to leave a trail of sludge as they fly through the air. However the projectile depletes its mass as it flies, dealing less impact damage as fragments separate and completely expiring once all fragments are dropped." |
| ||||||||
Sludge Blast
 |
|
"The charged shot cohesion is disrupted on firing, instantly shooting out fast-moving fragments in a shotgun-like blast. While spectacular the modifications result in reduced ammo capacity and an extended reload process." |
| ||||||||
x0.5 Corrosive DoT Duration
Stats Breakdown
Understanding the Weapon
- Damage is how much damage is dealt upon direct impact of an uncharged shot.
- Charged Area Damage is how much damage is dealt within the damage radius around the impact of a charged shot.
- Charged Fragment Damage is how much damage is dealt by each fragment spawned by a charged shot.
- Charged Fragment Count is the amount of fragments spawned by a charged shot.
- Effects Duration is the amount of time in seconds that corrosion affects an enemy when it is directly impacted by a corrosive projectile.
- Puddle Lifespan is the amount of time in seconds that a corrosive puddle persists after a corrosive projectile lands on surface.
Pressing the [FIRE] button ("Left Mouse" by default) will begin charging a charged shot. If the button is released before full charge, an uncharged shot is fired; otherwise, a charged shot is fired.
A charged shot can still be fired even if it would cost more ammo than is currently in the magazine, as long as the magazine contains at least 1 ammo. In this case, the charged shot consumes less ammo than it normally would, leaving the magazine empty.
Due to the weapon's Rate of Fire of 4, there is a 1/4 = 0.25s delay after an uncharged or charged shot before the next action can occur. This next action could be another uncharged shot, the beginning of the next charge-up, or the beginning of a reload.
Normal and Charged Shot Breakdown
Normal Shots & Charged Fragments
- Damage Type: 50% Kinetic / 50% Corrosive
- Damage Radius: 1m
- Max Damage Radius: 0.5m
- Minimum Damage: 25%
- Hitbox Radius: 0.25m (0.20m for Fragments)
- Friendly Fire: 20% (0% for Fragments)
- Self Friendly Fire: 0%
Charged Shots
- Damage Type: 50% Kinetic / 50% Corrosive
- Damage Radius: 2.5m
- Max Damage Radius: 1m
- Minimum Damage: 25%
- Hitbox Radius: 0.45m
- Friendly Fire: 20%
Corrosion Mechanics
Enemies hit directly or caught within the splash radius of the sludge projectiles have a 100% chance to be applied with Corrosion. (Note: Touching a corrosive puddle does not apply/refresh this effect.) Corrosion is not applied to Dwarves.
- Damage (per tick): 8
- Damage Type: 100% Corrosive
- Tick interval: 0.2 - 0.25s
- Duration: 4s
- Slowdown: 35% (x0.65 Movement Speed)
Armor Stripping:
In addition to dealing damage the corrosion DoT also deals heavy damage to armor, quickly stripping a creature of its protective shell.
Each tick one armor plate is damaged by the Primary Armor Damage, and up to three armor plates are damaged by the Secondary Armor Damage. The Primary Armor Damage applies to a single plate until it breaks, whereas the Secondary Armor Damage applies to random plates.
- Primary Armor Damage (per tick): 15
- Secondary Armor Damage (per tick): 5
- Tick interval: 0.2 - 0.25s
Puddle Properties
Enemies are slowed and take damage while touching a corrosive puddle. (Note: This DoT stacks with the aforementioned Corrosion DoT effect.) Puddles do not affect Dwarves.
- Damage (per tick): 4
- Damage Type: 100% Corrosive
- Tick interval: 0.2 - 0.3s
- Duration: 12s
- Slowdown: 45% (x0.55 Movement Speed)
- Hydrogen Ion Additive Overclock does not affect the puddle DoT or Slowdown.
- Puddle Diameter is affected by whether the puddle was created by a normal shot or a charged shot. Charged fragments create the same size puddles as normal shots.
- Normal diameter: 1.4m
- Charged diameter: 1.75m
- Puddles ignite after accumulating 20 Heat from any source. While burning, the puddles deal additional Fire + Heat damage to enemies that walk through them.
- Additional Damage (per tick): 12 Fire
- Heat (per tick): 12 Heat
- Tick Interval: 0.5 - 1.0s
In addition to the applying a damage over time that deals both Fire and Heat damage the Burning Goo Puddles are considered to be On Fire with a 1.7m Area Heat Radius. Along with this the Burning Goo Puddles act as an Environmental Heat Source with an Intensity value of 1. To calculate the total heat being applied to any given bug simply use this formula:
- Heat per Second = [ Current Intensity Temperature per Second ] + 5 x [ Nearby Puddles ]
Most of the time the amount of additional Heat damage will simply be 2 + 5 x [ Nearby Puddles ]. The Heat Intensity can be raised or lowered in the presence of other Environmental Heat or Cooling effects such as the Blizzards that may occur in the Glacial Strata.
Slowdown Mechanics
The two modifications, Protein Disruption Mix and Hydrogen Ion Additive, that affect the Sludge Pump's two sources of slowdown do not add to or replace the slowdown stats. Instead they act as separate multipliers to enemy movement speed.
| Modifications | Corrosion Status Effect | Corrosive Puddle | Corrosion + Puddle |
|---|---|---|---|
| Base | x0.65 | x0.55 | x0.3575 |
| Protein Disruption Mix | x0.4875 | x0.275 | x0.1341 |
| Hydrogen Ion Additive | x0.5525 | x0.55 | x0.3039 |
| PDM + HIA | x0.4144 | x0.275 | x0.1140 |
Unique Modifications
| Unique Modifications | ||
|---|---|---|
Fluroantimonic Acid |
Fluoroantimonic Acid increases the damage of both the Corrosion status effect and the Corrosive Puddles. The extra damage added to the puddles comes in the form of a second damage over time effect with its own tick rate and damage. |
Corrosion Bonus:
Second Puddle DoT:
|
Protein Disruption Mix |
Protein Disruption Mix increases the slowdown of both the Corrosion status effect and the Corrosive Puddles. This increase is in the form of a second slowdown, that stacks with the base slowdown, see above for the exact slowdown this produces. |
Corrosion Bonus:
Puddle Bonus:
|
Unique Overclocks
| Unique Overclocks | ||
|---|---|---|
|
Combustive Goo Mix |
Combustive Goo Mix causes enemies to explode when they are both Corroded and On Fire. It then removes both the Corrosion and On Fire status effects, restoring the enemy's temperature to 0. It also causes sludge puddles to explode when ignited. Neither explosion applies any damage to Dwarves. |
Enemy Explosion:
Puddle Explosion:
|
|
Goo Bomber Special |
Goo Bomber Special is an unstable overclock that causes Charged Shots to drop their Fragments straight down while flying, instead of upon impact. Every Fragment dropped reduces the damage of the main projectile. After every Fragment has been dropped / collide with an entity or the terrain, the main projectile is instantly destroyed. | |
|
Sludge Blast |
Sludge Blast is an overclock that changes the Charged Shot into a shotgun-like blast of the Fragments instead of a larger projectile. Fragments use the Charged Shot's damage instead. Charge Shots are also launched at a 3° angle instead of the normal 9° angle. | |
Mastery
Each modification that is purchased advances a mastery bar by one unit.
Mastery unlocks:
- Three modifications – First Stripe Weapon Paintjob
- Seven modifications – Deepcore Weapon Paintjob
- All modifications – The Company Special Weapon Paintjob
Skins
Full gallery of skins can be seen at Weapon Skins.
Gallery
- Demonstration of goo being ignited using Experimental Plasma Charger equipped with the Burning Nightmare modification.
- Combustive Goo Mix Overclock, paired with Experimental Plasma Charger using the Burning Nightmare modification in order to ignite the goo.
- Goo Bomber Special Overclock
- Sludge Blast Overclock
Trivia
- The weapon's reload interaction on a full clip consists of the Driller cranking the wheel twice, apparently mixing the goo inside so as to prevent it from stiffening.
- The Corrosive Sludge Pump's weapon prototype used the Platform Gun model and its goo blobs more closely resembled the goo generated by Goo Sacks.
- One of the weapon's upgrades is named "Fluoroantimonic acid." This substance currently holds the title of the world's most potent superacid.[1]
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This page is possibly not up to date. It was last updated for Season 01: Rival Incursion