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"Thunderhead" Heavy Autocannon

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"Thunderhead" Heavy Autocannon
GearGraphic AutoCannon.png
Equipment Details
Type Heavy Weapon
Used by Gunner
Slot Primary
Availability Unlock
A peculiar but devastating weapon. The slow rate of fire is made up for by heavy damage, delivered with glee by the belt-fed .50-caliber tungsten rounds. The Thunderhead is a somber weapon for the sophisticated executioner, delivering death as inexorably as the passage of time itself.
~ Item Description

About[edit | edit source]

The "Thunderhead" Heavy Autocannon is an unlockable primary weapon for the Gunner. It is an oversized light machine gun with two massive barrels extending outwards which fire in sequence. The weapon is loaded by a huge ammo box; while firing, bullets can be seen being loaded into the weapon from the box.

The Autocannon fires explosive rounds which detonate upon hitting the world or a target. Enemies hit directly by rounds take both the damage of the bullet and the explosive damage at once. Couple this with an immense magazine size of 110 rounds, and the Autocannon makes for an excellent area control weapon. It starts out with a sluggish fire rate, but this can build up over time the longer the trigger is held.

The Autocannon has several advantages over the Powered Minigun; its most obvious being a lack of overheating. While it is constrained by a magazine size limit, the Autocannon can keep firing for a much longer period than the Minigun can, providing a constant stream of damage to control enemies. Its explosive rounds are much better at destroying armor (especially with upgrades) and it is easier to manage ammo consumption with its lower firing rate.

However, the Autocannon is not without flaws. It has the longest reloading duration of any gun which can reload in the game, lasting an agonizing five seconds, which can cripple a team's presence when the Gunner runs out of ammo. It also has poor accuracy which doesn't improve over time while firing. It also suffers in damage-per-second (DPS) output compared to the Minigun, which can shred through bulky enemies such as Praetorians with ease while the Autocannon has to slowly whittle them down.

Considering the Autocannon's flaws, it is a much more defensive weapon than the Minigun, and players must adapt their strategies to compensate. Those who use the Autocannon effectively, however, will find that its excellent staying power and area control abilities make it more than a capable weapon in the right hands.

Icons Campaign.png Unlocked through an assignment.
Requires Gunner Level 10

Purchased for:
Credit.png 7200 Credits
Magnite 120 Magnite
Croppa 80 Croppa

Initial Stats
Damage 14
Area Damage 8
Magazine Size 110
Max Ammo 440
Rate of Fire
(per second)
Reload Time 5s
Damage Radius 1.2
Movement Speed While Using 50%

Modifications[edit | edit source]

There are five tiers and each tier has two to three upgrades, only one upgrade can be equipped per tier.

Gunner Upgrades
Mod Effect Description Price
Tier 1 Icon Upgrade DamageGeneral.png
Increased Caliber Rounds
+3 Damage The good folk in R&D have been busy. The overall damage of your weapon is increased. Credit.png 1200 Credits

Bismor 25 Bismor

Icon Upgrade ClipSize.png
High Capacity Magazine
+110 Magazine size The good thing about clips, magazines, ammo drums, fuel tanks... you can always get bigger variants. Credit.png 1200 Credits

Enor pearl 25 Enor Pearl

Icon Upgrade Ammo.png
Expanded Ammo Bags
+220 Max Ammo You had to give up some sandwich-space, but your total ammo capacity is increased! Credit.png 1200 Credits

Croppa 25 Croppa

Tier 2
Level 4
Icon Upgrade Aim.png
Tighter Barrel Alignment
-30% Base Spread Improved accuracy Credit.png 2000 Credits

Enor pearl 15 Enor Pearl
Croppa 24 Croppa

Icon Upgrade FireRate.png
Improved Gas System
+15% Rate of Fire We overclocked your gun. It fires faster. Don't ask, just enjoy. Also probably don't tell Management, please. Credit.png 2000 Credits

Enor pearl 15 Enor Pearl
Jadiz 24 Jadiz

Icon Upgrade FireRate.png
Lighter Barrel Assembly
+100% Rate of Fire Increase Speed Reach the max rate of fire faster Credit.png 2000 Credits

Bismor 15 Bismor
Enor pearl 24 Enor Pearl

Tier 3
Level 8
Icon Upgrade FireRate.png
Supercharged Feed Mechanism
+35% Rate of Fire We overclocked your gun. It fires faster. Don't ask, just enjoy. Also probably don't tell Management, please. Credit.png 2800 Credits

Jadiz 35 Jadiz
Croppa 50 Croppa

Icon Upgrade Area Damage.png
Loaded Rounds
+2 Area Damage Increased splash damage Credit.png 2000 Credits

Magnite 35 Magnite
Umanite 50 Umanite

Icon Upgrade DamageGeneral.png
High Velocity Rounds
+4 Damage The good folk in R&D have been busy. The overall damage of your weapon is increased. Credit.png 2800 Credits

Enor pearl 35 Enor Pearl
Magnite 50 Magnite

Tier 4
Level 12
Icon Upgrade ArmorBreaking.png
Penetrating Rounds
+400% Armor Break Bonus We're proud of this one. Armor shredding. Tear through that high-impact plating of those bug buggers like butter. What could be finer? Credit.png 4800 Credits

Magnite 48 Magnite
Enor pearl 50 Enor Pearl
Jadiz 72 Jadiz

Icon Upgrade Area.png
Shrapnel Rounds
+0.5 Effect Radius Greater splash damage radius Credit.png 4800 Credits

Umanite 48 Umanite
Magnite 50 Magnite
Jadiz 72 Jadiz

Tier 5
Level 16
Icon Upgrade DamageGeneral.png
Feedback Loop
+20% Full RoF Damage Bonus Increased damage when at max rate of fire Credit.png 5600 Credits

Magnite 64 Magnite
Bismor 70 Bismor
Croppa 140 Croppa

Icon Upgrade ScareEnemies.png
Suppressive Fire
+Impact Fear AoE Chance to scare enemies next to a bullet impact Credit.png 5600 Credits

Magnite 64 Magnite
Bismor 70 Bismor
Umanite 140 Umanite

Icon Upgrade Resistance.png
Damage Resistance At Full RoF
+30% Damage resistance when at maximum fire rate Gain damage reduction when at max rate of fire Credit.png 5600 Credits

Croppa 64 Croppa
Enor pearl 70 Enor Pearl
Jadiz 140 Jadiz

Overclocks[edit | edit source]

"Thunderhead" Heavy Autocannon
Type Overclock Effect Description Price
Icon Upgrade Ammo.png
Composite Drums
+110 Max Ammo
-0.5 Reload Time
Lighter weight materials means you can carry even more ammo! Credit.png 7850 Credits

Croppa 135 Croppa
Enor pearl 70 Enor Pearl
Magnite 105 Magnite

Icon Upgrade Area.png
Splintering Shells
+1 Area Damage
+0.3 Effect Radius
Specially designed shells splinter into smaller pieces increasing the splash damage range. Credit.png 7300 Credits

Jadiz 125 Jadiz
Magnite 65 Magnite
Croppa 95 Croppa

Icon Upgrade Area Damage.png
Carpet Bomber
+4 Area Damage
+1 Effect Radius
-6 Damage
A few tweaks here and there and the autocannon can now shoot HE rounds! Direct damage is lower but the increased splash damage and range lets you saturate and area like no other weapon can. Credit.png 7350 Credits

Croppa 120 Croppa
Umanite 70 Umanite
Magnite 105 Magnite

Icon Upgrade MovementSpeed.png
Combat Mobility
+15% Movement Speed While Using
-2 Damage
A slight reduction in the power of the rounds permits using a smaller chamber and a light-weight backplate with in turn allows extensive weight redistribution. The end result is a weapon that still packs a punch but is easier to handle on the move. Credit.png 7650 Credits

Jadiz 120 Jadiz
Croppa 70 Croppa
Magnite 95 Magnite

Icon Upgrade DamageGeneral.png
Big Bertha
+12 Damage
x0.5 Magazine Size
-110 Max Ammo
-25% Rate of Fire
Extensive tweaks give a huge bump in raw damage at the cost of ammo capacity and fire rate. Credit.png 8400 Credits

Bismor 125 Bismor
Umanite 80 Umanite
Croppa 105 Croppa

Icon Overclock Neuro.png
Neurotoxin Payload
+Neurotoxin Payload (20% Chance)
-6 Damage
-6 Area Damage
Channel your inner war criminal by mixing some neurotoxin into the explosive compound. The rounds deal less direct damage and splash damage, but affected bugs move slower and take lots of damage over time. Credit.png 8100 Credits

Magnite 135 Magnite
Jadiz 75 Jadiz
Croppa 100 Croppa

Skins[edit | edit source]

Full gallery of skins can be seen at Weapon Skins.

Trivia[edit | edit source]

  • Mission Control warns the player about the unwieldiness of the Thunderhead upon them receiving its license.
  • The weapon currently deals no friendly fire.