A hunter playing with his prey

Vanguard, the squad's shield. He carried a large protective shield that he used to cover his comrades as they advanced under enemy fire. His job was to absorb the shots and clear a path so the rest of the team could attack from behind. As a Shocktrooper, his defensive equipment became even more robust; instead of his shield, he now wears a heavy metal plate on his back that he can position to support his new weapon, a devastatingly powerful, high-caliber automatic machine gun capable of wiping out entire squads. However, it is very inaccurate without support, and he cannot run or jump while firing.

The Lancer was a close-combat unit, equipped with a heavy lance and a reinforced helmet that allowed them to withstand blows that would knock down other soldiers. They also carried painkillers that prevented them from feeling pain for a considerable time. Their role was to break through defensive lines and advance directly toward the enemy. When they became Shocktroopers, their equipment became even heavier and their durability increased, making them an extremely difficult-to-stop shock force. Furthermore, instead of a lance, they now carried a high-rate-of-fire, high-impact semi-automatic shotgun that could eliminate enemies with a single shot at medium and medium ranges.

The Jaeger was a specialist in sabotage and ambushes. It laid traps, used smoke, and attacked from unexpected positions to destabilize the enemy. Its Shocktrooper variant had a unique ability: it could completely turn off its flashlight, allowing it to see much better in the dark, moving through tunnels without revealing its position while hunting enemies from the shadows.

Their traps range from bear traps, a small explosive charge triggered by a tripwire, a toxic gas bomb operated by a tripwire, a trip light, dynamite that explodes when shot, and a shotgun shell fired by a tripwire.

The Officer, also known as a captain within some squads, was in charge of directing the battle. He used command tools to coordinate attacks, boost troop morale, and mark important objectives. In his Shocktrooper form, he carried a large radio on his back, connected to reconnaissance systems that transmitted real-time enemy location information, allowing his squad to react much faster to enemy movements.

The Mortician was the chemical and medical support specialist, and they wore a mask to protect themselves from toxic gas. They used compounds and syringes to heal soldiers, enhance their abilities, or weaken enemies with experimental substances. When they became a Shocktrooper, their equipment changed completely: they received a flamethrower capable of firing continuously for about a minute and a half, making them a devastating threat inside enclosed tunnels.

The Rook was the battlefield engineer. His job was to dig tunnels—his clothing was more resistant to explosions—build defenses, and open new underground routes using heavy tools and explosives. When a Rook was equipped as a Shocktrooper, he received an extremely powerful anti-materiel rifle. The weapon had such brutal force that each shot temporarily deafened the shooter, but it was capable of penetrating heavy cover and eliminating targets that other weapons could not.

The Soldat was the standard soldier and the backbone of any squad. He was versatile, could carry a considerable amount of equipment, and was usually responsible for direct combat while also supplying ammunition to his comrades when needed. His Shocktrooper variant specialized in breaching enemy positions using experimental, low-caliber, light automatic weapons to quickly clear tunnels.

In underground warfare, armies developed distinct specialized roles to survive in the tunnels and caverns where battles were fought. Each type of soldier fulfilled a different function within the squad, from clearing paths to protecting comrades or keeping them alive. From time to time, Shocktroopers appeared on the battlefield—rare fighters equipped with special or experimental gear. They were not common; only a select few soldiers received such weaponry. When one appeared in combat, it usually meant the battle was about to escalate.

For years, the world was divided between two great powers: the Golden Empire and the Royal Nation. The Golden Empire was a powerful empire ruled by a Queen, a central figure in its society. The empire valued unity, discipline, and obedience, believing that the world could only remain stable under a strong authority that guided everyone toward a common purpose. In contrast, the Royal Nation was an alliance of countries ruled by a King, who led the coalition and represented the independence of its nations. This faction championed values ​​such as liberty, patriotism, and autonomy, opposing the expansion and control of the Golden Empire. Tensions between the two powers had been growing for years until an event triggered the war: the assassination of a prince of the Royal Nation. The prince's death led to accusations against the Golden Empire and unleashed a military escalation that soon became all-out war. The conflict became so devastating that the planet's surface was destroyed by years of bombing and industrial warfare. Cities were left in ruins, and large regions of the world became uninhabitable. In response, the populations of both sides moved underground, building enormous networks of tunnels and underground shelters. However, the war never ended. Even in the depths of the planet, the armies of the Golden Empire and the Royal Nation continued to fight in narrow passages and dark caverns, keeping alive a conflict that had already buried the entire world. In this timeline we are in approximately 1930, so the weapons carried by the shocktroopers are experimental weapons.

Among the soldiers, a story circulated about him. Years ago, during an ambush in a narrow tunnel, his squad was trapped between two enemy groups. Erick was one of the last to retreat, covering the wounded with his shield. In the chaos, a shot pierced the smoke and hit him in the neck. Everyone thought he had died, but he hadn't.

Just seconds later he got up again, staggering but still holding his shield. He remained in the tunnel long enough to slow the enemy advance and allow his squad to escape. When he finally fell, covered in blood, doctors later said he had survived by an absurd mix of luck and his body's incredible resilience. From then on, many soldiers began to see him as a man difficult to take down; some even said his neck was as hard as iron.

Erick never spoke about that moment. If someone mentioned it, he simply responded with indifference.

He protected the rookies within his squad and was one of the few who took the time to teach them how to move in the tunnels, how to listen for the sounds of digging through the earth, how to distinguish the echo of a nearby gunshot from a distant one. But he never did it with kind patience. If someone made a mistake, Arthur would correct them with a cold stare or a short phrase that could feel like a punch.