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Splatter enemies with a short-range stream of corrosive bile and then toss the ammo bladder as a grenade when reloading. The emptier the pistol's ammo bladder, the more potent its damage. A fully empty bladder packs the biggest punch.

Catabolyst is an Infestation w.svg Infested sidearm that fires a short-ranged DmgCorrosiveSmall64.png Corrosive beam. When reloading, the Catabolyst's clip is thrown like a grenade, with greatly increased potency if reloading from an empty clip.


This weapon primarily deals DmgCorrosiveSmall64.png Corrosive damage.


  • Innate DmgCorrosiveSmall64.png Corrosive damage – effective against Ferrite Armor and Fossilized.
  • Very high critical multiplier.
  • Extremely high status chance.
  • High fire rate.
  • Innate 0.9 meter Punch Through.
  • Consumes 0.5 ammo per tick of damage.
  • Fairly fast reload speed.
  • The zone of impact or maximum beam range has a spherical blast radius of 1 meter, allowing it to hit multiple enemies at once.
    • Radial damage is not affected by multishot.
    • Radius is affected by (Mod TT 20px.png Primed) Mod TT 20px.png Fulmination.
  • Reload throws a grenade at the reticle that explodes in 5 - 7 meter radius on impact with a surface or enemy.
    • Damage, critical chance, status chance, and explosion range increase when reloading with no ammo in the magazine.
    • Initial hit and explosion apply status separately.
    • Explosion does not need direct line of sight to deal damage and will penetrate walls.
  • Innate Madurai Pol.svg polarity.


  • Innate DmgCorrosiveSmall64.png Corrosive damage – less effective against Proto Shields.
  • Will never reload on its own, must be reloaded manually.
  • Primary beam:
    • Low critical chance.
    • Has linear damage falloff from 100% to 80% from 9m to 19m target distance. Distance is affected by Projectile Speed but do not increase the maximum range of the beam.
    • Damage ramps up from ?% to 100% over 0.6 seconds when firing. After firing stops for 0.8 seconds, the damage decays back to ?% over 2 seconds.
    • Limited range of 19 meters. Range is affected by Mod TT 20px.png Ruinous Extension.
  • Reload grenade:
    • Low base critical chance.
    • Has travel time.
    • Explosion inflicts self-stagger.
    • Explosion has linear damage falloff from 100% to 50% from central impact.
    • Weapon must be completely emptied from a full magazine in order maximize the use of the grenade.


The Catabolyst's blueprint can be researched from the Bio Lab in the dojo.

Manufacturing Requirements
Mutagen Mass.png
Time: 24 hrs
Rush: Platinum64.png 35
MarketIcon.png Market Price: Platinum64.png 190 Blueprint2.svg Blueprints Price:Credits64.png50,000
Bio Lab ResearchClanAffinity64.png3,000
Time: 72 hrs
Prereq: Embolist
Ghost Clan x1   Shadow Clan x3   Storm Clan x10   Mountain Clan x30   Moon Clan x100


  • Will not reload automatically on an empty magazine, preserving the grenade. The player must manually reload the weapon to toss it out and refill the magazine.
    • Cannot throw the grenade if reserve ammo is completely depleted.
  • If reload is interrupted after throwing an empty clip, reloading again will throw a weaker grenade. This includes if the player is knocked back from a full magazine explosion.
  • The grenade throwing animation speed is affected by reload speed.
  • Mod TT 20px.png Synth Charge increases the grenade damage.
  • Increasing magazine capacity has no effect on grenade damage.
  • Adding additional Punch Through affects the reload grenade, causing it to deal miniscule damage and pass through the floor without causing an explosion.


  • Multishot does not affect the reload grenade.


  • As this weapon has innate DmgCorrosiveSmall64.png Corrosive damage, very high status chance, and the primary fire uses very powerful beam Multishot mechanics, it is able to very effectively build into DmgCorrosiveSmall64.png Corrosive, DmgViralSmall64.png Viral, and either DmgElectricitySmall64.png Electricity or DmgHeatSmall64.png Heat damage all at the same time. The first two procs tend to cap and provide their maximum bonuses almost instantly, while the single element Damage over Time effects will stack up dozens of procs. This makes the weapon extremely powerful against individual enemies.


  • Its name is based on catabolysis, a biological process in which the body breaks down fat and muscle tissue for survival, which only occurs during extreme cases of malnutrition.
  • When tossing the empty magazine, the player appears shocked that a new one has grown in its place, even going so far as to act like they are going to replace it themselves only to realize it's full again.
    • The player will also grab a fully empty magazine and look at it before throwing, where partial reloaded magazines will simply be tossed quickly.


See Also[]

  • Sporothrix.png Sporothrix, a sniper rifle that shares the same visual theme.
  • Pulmonars.png Pulmonars, a melee weapon that shares the same visual theme.

Patch History[]

Hotfix 29.5.7 (2020-12-10)

  • Fixed Catabolyst not showing a TRIGGER TYPE in Arsenal stats.

Hotfix 29.5.1 (2020-11-19)

  • Removed Catabolyst from Conclave.

Update 29.5 (2020-11-19)

  • Introduced.