R-36 Eruptor

Last updated: 1.002.003
Current patch: 1.003.001

Weapons

Primary Weapons

Explosives

R-36 Eruptor

“

This bolt-action rifle fires jet-assisted shells that explode shrapnel in all directions upon impact. Not recommended for close-quarters use.

— Armory Description

The Eruptor is a Primary Weapon that fires jet-assisted shells which inflict impact, explosion and shrapnel damage.

Procurement

The Eruptor is unlocked on the 2nd page of the Democratic Detonation Premium Warbond for 60 Medals.

Detailed Weapon Statistics

R-36 Eruptor
Fire Rate	32 rpm
Recoil	75
Capacity	5
Reload Time	4.7 s
Tactical Reload	2.8 s
Spare Magazines	6
Starting Magazines	4
Mags from Supply	6
Mags from Ammo Box	3
Attacks
Rocket JAR Phoenix 20mm	Projectile
JAR Phoenix 20mm	Explosion
Shrapnel	Projectile x 30

Rocket JAR Phoenix 20mm
Projectile
Caliber	15 mm
Mass	100 g
Initial Velocity	180 m/s
Drag Factor	0%
Gravity Factor	30%
Lifetime	1 sec
Penetration Slowdown	25%
Damage
Standard	230
vs. Durable	115
Penetration
Direct	Heavy
Slight Angle	Heavy
Large Angle	Heavy
Extreme Angle	Unarmored I
Special Effects
Demolition Force	30
Stagger Force	35
Push Force	20

JAR Phoenix 20mm
Area of Effect
Inner Radius	4 m
Outer Radius	7 m
Shockwave Radius	8 m
Damage
Inner Radius	225
Outer Radius	224 - 0
Penetration
Inner Radius	Medium
Outer Radius	Light
Shockwave	Medium
AoE Effect
Demolition Force	20
Stagger Force	35
Push Force	40

Shrapnel
Projectile
Caliber	10 mm
Mass	100 g
Initial Velocity	30 m/s
Drag Factor	40%
Gravity Factor	100%
Penetration Slowdown	25%
Damage
Standard	110
vs. Durable	35
Penetration
Direct	Medium
Slight Angle	Medium
Large Angle	Light
Extreme Angle	Unarmored I
Special Effects
Demolition Force	10
Stagger Force	10
Push Force	20

Tactical Information

• Timed Fuse Limit: Rounds have a 1s lifetime, causing them to explode at 180m, despite the 200m max zoom.
• Adjustable Scope:
  • 25m: x1 zoom
  • 50m: x2 zoom
  • 100m: x3 zoom
  • 200m: x4 zoom
• The Eruptor excels at delivering devastating area damage with each shot but suffers from a very low firing rate and limited ammo capacity.
  • Each shot inflicts three types of damage: direct impact, an explosive blast, and shrapnel.
  • The weapon’s bolt must be manually cycled between shots, making it one of the slowest-firing weapons in the game, aside from anti-tank weaponry.
  • With a five-round magazine and six spare magazines, the Eruptor has a total of only 35 rounds. Every shot must count, making Secondary and Support Weapon choices crucial. The Siege-Ready passive can be beneficial, as it increases spare magazine capacity and improves reload speed.

• The Eruptor's jet-assisted rounds are highly versatile, capable of dealing both heavy single-target and area damage.
  • Tough enemies take damage from the projectile impact, explosion, and shrapnel. This combined damage can eliminate most medium-sized enemies in one or two shots, depending on shrapnel distribution and the target's explosion resistance.
  • Groups of small enemies are highly vulnerable, as they are hit by both the explosion and shrapnel. This is especially effective against Terminids, allowing a single shot to wipe out a patrol of Pouncers and Bile Spitters. It also excels at clearing Bug Breaches and destroying the underside of a Dropship during a Bot Drop.
    • A Gunship also can be destroyed in just two shots by targeting its engines.
  • The Eruptor's explosive power makes it effective against mission objectives. A single round can destroy a Bug Hole, simplifying the clearing of Bug Nests and Stalker Lairs. It can also eliminate Automaton Fabricators amd Bulk Fabricators by hitting their exhaust vents, and take down Broadcast Towers in one shot. Spore Spewers and Shrieker Nests require as few as three shots.
• The Eruptor is equipped with an adjustable scope that allows it to accurately deliver ordnance downrange.
  • The Eruptor performs best at long ranges by sending its explosive rounds at targets that are unaware of the wielder's presence, acting as a grenade sniper. This is important both for keeping targets at arm's length, as well as before their pursuit and evasive movements scatters them such that fewer can be caught within the explosive and shrapnel radius.
  • Beware that the Eruptor has a maximum range of approximately 180 meters, after which rounds will automatically explode. This prevents the weapon from sniping targets at extreme ranges, but is generally not an issue since engaging targets at ranges greater than 40-50 meters already grants it a strong tactical advantage.
  • The scope is particularly useful for destroying enemy spawners from safety. Standing on the outer rim of a Bug Nest and shooting Bug Holes while circulating around the perimeter can clear it without ever stepping foot inside, while getting a clean angle on a Fabricator's front can destroy it without engaging any of the enemies within a Bot Outpost.
• Due to a combination of factors, the Eruptor fares very poorly at close range.
  • Because of the explosion and shrapnel dealt at the point of impact, players can easily inflict enough damage to kill themselves by shooting at nearby targets. Care should also be taken when attempting to support teammates with Eruptor fire as the explosion and shrapnel can easily inflict friendly fire under the wrong circumstances.
    • A reliable Secondary Weapon or rapid-fire Support Weapon is recommended to deal with enemies at close range. Pistols like the P-113 Verdict can quickly dispatch individual targets, while machine guns like the MG-43 Machine Gun or M-105 Stalwart combine reliability with staying power.
    • A drone backpack like the AX/AR-23 "Guard Dog" or AX/LAS-5 "Guard Dog" Rover is also very useful, providing automatic overwatch and quickly killing most small enemies before they become a problem.
    • The Eruptor's ergonomics are also notoriously poor, as it possesses significant weapon drag. This makes it cumbersome to use when trying to quickly shift aim, which negatively impacts the wielder's ability to quickly acquire targets, especially at closer ranges.
      • The Peak Physique armor passive increases ergo by 30.
      • Utilizing Iron Sights and an Angled Foregrip can be very helpful in alleviating this characteristic of the weapon which increases ergo from 11 to 35.
  • The weapon's low rate of fire makes it very difficult to place successive rounds on target. Each shot should be deliberately placed for maximum effect, and it is difficult to make such judgment calls in the middle of a combat melee.
  • Tactical reloads are best done when only one round is left in the weapon. Due to the weapon's small combat load, every single shot is extremely valuable, so leaving rounds in the discarded magazine is very wasteful. Each shot has the potential to destroy an enemy spawner, or kill groups of enemies.

Change History

Patch

Description

1.003.000
2025-05-13

Changes

• Spread decreased from 10 to 5
• Ergonomics increased from -14 to 25
• Sway decreased from 1 to 0.8
• Fire rate increased from 25 to 32

Fix

• Fixed a bug that allowed players to cancel the Eruptor's round cycling animation, effectively increasing its fire rate

1.002.201
2025-03-25

Fix

• Fixed an issue where shrapnel from surface-hits was forced in a roughly south-west direction. Shrapnel should now properly fly out in a 180-ish arc in the direction of the surface hit

1.002.200
2025-03-18

Changes

• Projectile armor penetration increased from Medium (3) to Heavy (4)
• Projectile lifetime increased from 0.7 to 1 sec

1.001.201
2024-10-29

Undocumented Changes

• Changed the Eruptor's gunshot sound.

1.001.100
2024-09-17

Changes

• Re-introduced shrapnel.
  • Replaced the original shrapnel with the Frag Grenade shrapnel to no longer instantly one-shot Helldivers with the exception of the occasional unlucky headshot.
  • Also increased the amount of shrapnel.
• Shrapnel projectiles amount are set to 30.
• Shrapnel damage is set to 110.
• Explosion damage decreased from 340 to 225.
• Explosion radius increased by 33% (17% for inner radius and 50% for outer radius).
  • Inner Radius increased from 2m to 4m.
  • Outer Radius increased from 6m to 7m.
  • Shockwave Radius increased from 6.5m to 8m.

1.000.400
2024-06-13

Changes

• Increased total damage from 420 to 570 damage per shot.
  • Explosion damage increased from 190 to 340, projectile damage unchanged.

1.000.302
2024-05-07

Changes

• Increased explosion damage by 40 and removed shrapnel from the explosion.

Fixes

• Fixed issues with some weapon scopes not being aligned in First-Person-View.

1.000.300
2024-04-29

Changes

• Slightly increased explosion damage falloff.
• Reduced max mags from 12 to 6.

Fixes

• Explosive weapons no longer pull players inward from the blast.

1.000.202
2024-04-11
(Mid-Patch)

Added to the game.

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Weapons

Primaries

AR-23 Liberator  •  AR-23A Liberator Carbine  •  AR-23C Liberator Concussive  •  AR-23P Liberator Penetrator  •  AR-61 Tenderizer  •  ARC-12 Blitzer  •  BR-14 Adjudicator  •  CB-9 Exploding Crossbow  •  FLAM-66 Torcher  •  JAR-5 Dominator  •  LAS-16 Sickle  •  LAS-17 Double-Edge Sickle  •  LAS-5 Scythe  •  MP-98 Knight  •  PLAS-1 Scorcher  •  PLAS-101 Purifier  •  PLAS-39 Accelerator Rifle  •  R-2 Amendment  •  R-2124 Constitution  •  R-36 Eruptor  •  R-6 Deadeye  •  R-63 Diligence  •  R-63CS Diligence Counter Sniper  •  SG-20 Halt  •  SG-225 Breaker  •  SG-225IE Breaker Incendiary  •  SG-225SP Breaker Spray&Pray  •  SG-451 Cookout  •  SG-8 Punisher  •  SG-8P Punisher Plasma  •  SG-8S Slugger  •  SMG-32 Reprimand  •  SMG-37 Defender  •  SMG-72 Pummeler  •  StA-11 SMG  •  StA-52 Assault Rifle

Secondaries

P-2 Peacemaker  •  CQC-19 Stun Lance  •  CQC-2 Saber  •  CQC-30 Stun Baton  •  CQC-5 Combat Hatchet  •  GP-31 Grenade Pistol  •  GP-31 Ultimatum  •  LAS-58 Talon  •  LAS-7 Dagger  •  P-11 Stim Pistol  •  P-113 Verdict  •  P-19 Redeemer  •  P-4 Senator  •  P-72 Crisper  •  PLAS-15 Loyalist  •  SG-22 Bushwhacker

Support

AC-8 Autocannon  •  APW-1 Anti-Materiel Rifle  •  ARC-3 Arc Thrower  •  CQC-1 One True Flag  •  EAT-17 Expendable Anti-Tank  •  Entrenchment Tool  •  FAF-14 Spear  •  FLAM-40 Flamethrower  •  GL-21 Grenade Launcher  •  GR-8 Recoilless Rifle  •  LAS-98 Laser Cannon  •  LAS-99 Quasar Cannon  •  M-105 Stalwart  •  MG-206 Heavy Machine Gun  •  MG-43 Machine Gun  •  MLS-4X Commando  •  RL-77 Airburst Rocket Launcher  •  RS-422 Railgun  •  SG-88 Break-Action Shotgun  •  StA-X3 W.A.S.P. Launcher  •  TX-41 Sterilizer

Attachments

2x Tube Red Dot  •  Reflex Sight  •  Holographic Sight  •  4x Combat Scope  •  10x Sniper Scope  •  No Underbarrel  •  Laser Sight W/ Flashlight  •  Vertical Foregrip  •  Angled Foregrip  •  Flashlight Vertical Foregrip  •  Laser Sight Angled Foregrip  •  No Attachment  •  Muzzle Brake  •  Flash Hider  •  Compensator  •  Iron Sight  •  1.5x Tube Red Dot  •  No Choke  •  Reflex Sight Mk2  •  Full Choke  •  Half Choke  •  Extended Magazine  •  High Dissipation Heatsink  •  Duckbill  •  Standard Heatsink  •  High Capacity Heatsink  •  Drum Magazine  •  Short Magazine