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"Scrapjack! What a sad collection of limbs!"

The Scrapjack, or Scrapjack Rocketeer, is a powerful enemy first introduced in Serious Sam 3: BFE and then later appearing in Serious Sam 3 VR: BFE, Serious Sam's Bogus Detour,Serious Sam VR: The Last Hope and Serious Sam 4. It is the second boss of I Hate Running Backwards.


Scrapjacks are low-grade models of Mental's forces, created from crudely stitched-together and assembled body parts of killed soldiers. A Scrapjack has three selectable heads, which can exhibit various behaviors and make them a dangerous threat.

Three variants of Scrapjacks are known to exist. The common variety wields two rocket launchers, and a much larger version, known as Raahloom, wields a massive warhammer and a modified SBC Cannon. The Fattie Swallower is slightly larger than the regular Scrapjack, and fires large sawblades instead of cannonballs or rockets.


Scrapjacks are not usually as common as other enemies, and often appear in the later levels of whatever game they appear in. In combat, they usually serve a role of giving support to the main attacking force.

Serious Sam 3: BFE[]

The first Scrapjack encountered in the game appears in Unearthing the Sun. Five more additional Scrapjacks appear later on the same level. As the player progresses throughout the game, Scrapjacks are encountered more frequently, and are usually present one to few at a time, although there can be more in the final level, The Guardian of Time, with at least a dozen Scrapjacks being seen.

Serious Sam's Bogus Detour[]

In Serious Sam's Bogus Detour, Scrapjacks are encountered much earlier compared to other games, appearing as soon as the second level, though they are more uncommon than before. Scrapjacks are often seen surrounded by groups of weaker enemies.

Serious Sam VR: The Last Hope[]

In Serious Sam VR: The Last Hope, the player may encounter several Scrapjacks at a time. They are encountered in the mid to late levels of the game.

Serious Sam 4[]

In Serious Sam 4, the first Scrapjack appears in Death from Above along with a squad of Octanian Gamma Troopers. In the later levels, they occur much more frequently, often in small groups and with hordes of weaker enemies.


Scrapjacks are deployed into areas where heavy enemy resistance is encountered by Mental's forces. The more resistance they encounter, the more Scrapjacks are needed. Like Adult Arachnoids, they are often used to support weaker troops and to provide covering fire with the rockets they fire.

Behavior and abilities[]

Scrapjacks exhibit different behaviors, and as a result can be dangerous if left unchecked.

Due to their sheer size and weight, Scrapjacks move very slow, often shaking the ground around them. A telltale sign that a Scrapjack is near is by listening to their heavy breathing and grunts, as well as the loud footsteps they make when moving. Their size and health allows them to endure multiple direct rocket hits, but can still be easily dispatched at a distance with concentrated fire from the M29 Infantry Assault Rifle, and even more easily eliminated by detonating a single C-4 charge that has been attached to their torso.

With three selectable heads to choose from, Scrapjacks show different behaviors, from bland attacking to berserking rage. Their firing patterns are very similar to the Zumb'ul; a Scrapjack will fire a rocket where the player currently is, and another where the Scrapjack predicts where the player's estimated direction is. The Scrapjack also has a "berserk" mode when it has been damaged enough. In this phase, the Scrapjack will rapidly fire missiles in a much faster, longer succession just as accurately as regular attacking, just like Major Bio-mechanoids. Scrapjacks also have a strong melee attack if the player gets too close. Scrapjacks can also fire rockets if there is an obstacle between a player and Scrapjack, even if the obstacle is indestructible.

Unlike most enemies, the Scrapjack can only be executed with a melee attack if it becomes stunned under heavy fire from various weaponry. Not all weapons will stun the Scrapjack, however, though stronger ones such as the A-24 Devastator and the XPML21 Rocket Launcher will always stun the Scrapjack under consistent fire. A special melee attack against the Scrapjack consists of the player ripping off the head of a Scrapjack, which is then followed by a kiss on the resulting trophy the player is left with.

In the Serious Sam Fusion version of Serious Sam 3, on Serious difficulty, the Scrapjack has the chance to fire a volley of grenades in a mortar-style fashion. These grenades travel very far and explode a few seconds after touching the ground. They can deal a lot of damage to an unsuspecting player, quickly draining them of their health and armor or killing them in just a few hits. On the other hand, Scrapjacks can now be executed with a melee attack without needing to be stunned first and have less health than before, now having only 460 HP.

In Serious Sam 4, the Scrapjack follows the same attack pattern as it does in Serious Sam 3, though it will fire less rockets than before and it has the same health as in Serious Sam Fusion. It rockets now deal four times as much damage than in the previous game.


Serious Sam 3: BFE[]

  • The rocket launcher is one of the main ways to take Scrapjacks down as Scrapjacks are very slow and do not strafe as an attempt to avoid rockets, unlike Khnums. The A-24 Devastator is an option when there are more enemies.
  • A skilled player can take down an entire volley of rockets fired by the Scrapjack with the assault rifle if they are accurate enough.
  • The XM214-A Minigun works good against a Scrapjack. If they don't have the minigun, the assault rifle also works, but it depletes ammunition quickly, and takes at least 75 rounds to kill a Scrapjack (at least 46 rounds in Serious Sam Fusion).
  • The XL2 Lasergun is also effective against Scrapjacks, requiring only 38 lasers (23 in Serious Sam Fusion), but note that the XL2, along with its ammo, can only be found in secrets, so use it sparingly.
  • Lone Scrapjacks can be taken out with a single well-placed C-4 explosive or the Sirian Mutilator. Using the Mutilator is not always a good option, as the Scrapjack will pull the player closer to them when using it, leaving the player vulnerable to their melee attack or being swarmed by other enemies, especially Kleer Skeletons and Major Bio-mechanoids.
  • The grenades fired by the Scrapjack in Serious Sam Fusion on Serious difficulty are very dangerous and should be avoided by sidestepping in the opposide direction from which they are fired.
  • With other enemies, Scrapjacks are medium-priority targets. On Serious difficulty, they should be treated as high-priority targets. Their projectiles can be dodged with relative ease but it can prove quite difficult when there are many of them onscreen. At close range, their target priority is higher as it is hard to dodge their projectiles at close range.
  • In Serious Sam Fusion, Scrapjacks have less health, making them easier to kill than before.

Serious Sam 4[]

  • As was the case in Serious Sam Fusion, Scrapjacks have 460 HP in Serious Sam 4, which makes them a lot easier to finish off than before.
  • The player should shoot at their head whenever they get the chance. Strong weapons like the Double Barrel Coach Gun, Devastator, or RAPTOR Sniper Rifle can pick off a Scrapjack in just one or two shots to the head.
  • For groups, the FRPCL, MK III Grenade Launcher, and SBC Cannon are brilliant weapons against them.
  • If the player has unlocked the homing rocket upgrade for the rocket launcher, it will only take roughly three rockets to kill one.
  • Scrapjacks should be considered a medium or high-priority target due to the damage their rockets inflict, especially on harder difficulties. They can also be a major nuisance to the player if they are fighting other enemies.

Related achievements[]

Serious Sam 3: BFE[]

Achievement Load of Scrap.jpg
Load of Scrap Ps 3 bronze.png
Rip Scrapjack's head off.

Serious Sam Fusion[]

Achievement Load of Scrap SSF.jpg
Load of Scrap
Rip Scrapjack's head off.

I Hate Running Backwards[]

Jackslayer 20 Gscore.png Ps 3 bronze.png
Kill Scrapjack
Scrap 'n Slap.jpg
Scrap 'n Slap 10 Gscore.png Ps 2 silver.png
Kill Scrapjack using only the hammer


  • The Scrapjack looks and behaves much like the Mancubus from the Doom series. Also similarly to the Mancubus in Doom II, the Scrapjack's rockets can sometimes clip through walls, hitting the player even if the Scrapjack is on the other side of a solid barrier. This usually happens in areas where the Scrapjack is close to a wall.
  • Scrapjacks are one of the few enemies to tauntingly laugh when the player dies.
  • The Scrapjack's rocket launchers resemble the rocket launchers used by the Major Bio-mechanoid.
  • The player cannot rip the Scrapjack's head off on Tourist difficulty, because their health is too low for them to be stunned.
  • While it is stated that Scrapjacks are built from sewn-together parts of other units, it is not explicitly specified which those enemy types are. The rocket launchers appear to be the same model as the ones used by the Major Bio-mechanoid, and as for the creature itself, it has a fleshy, human-like appearance, meaning that it must be made of human Cloned Soldiers and/or Sirian beheaded infantry. The Scrapjack's obesity and imposing size must be either a side effect of the manufacturing process, or completely on purpose (so as to be able to carry the massive rocket launchers that are too large to be wielded for a human-sized creature).



Serious Sam 3: BFE[]

Serious Sam's Bogus Detour[]

I Hate Running Backwards[]

Serious Sam 3 VR: BFE[]

Serious Sam 4[]

List of appearances[]