VC32 Sniper Rifle, StA5X Arc Cannon, M32 Combat Knife, VC1 Flame Thrower, Spider Mine
Killzone video game series
Following the First Extrasolar War, the Helghan Corporation was dismantled and all of its assets seized by the UCN. Vekta, once a planetary holding of the now-defunct Helghan Corporation, was turned over to direct ISA rule, and colonists from Earth were brought in to supplement Vekta's corporate-affiliated population. However, tensions soon rose between the Earth minority and Helghan corporate majority, resulting in Helghan resistance fighters targeting and killing many Earth-loyal citizens in terrorist attacks. This forced the ISA governor to enact more and more economic sanctions and military punishments on the Helghan-affiliated colonists in retribution for the Helghan persecution of Earth-loyal colonists. In the face of brutal draconian laws and punishments, the Helghan loyalists eventually stopped their persecution of Earth-loyal colonists.
By 2220, all Helghan corporate colonists had chosen voluntary relocation to planet Helghan, where years of hardship awaited them. The Helghan settlements recreated the former Helghan Authority to rule over all affairs on Helghan, but this rule was often inefficient and corrupt. Their Helghan colonists' human bodies were also mutated by the harsh environment of Helghan, resulting in most of the first generation dying only a short while after they arrived in the system. However, by 2305, future generations had evolved an increased biological resistance to the harsh atmospheric conditions, some even discarding the common breathing masks that many colonists still relied upon. In 2330, Helghan was hit by a major economic depression, allowing Scolar Visari to rise to power. In 2347 Visari staged a successful coup against the ruling Helghan Administration, which declared him the "Autarch". He created the more sophisticated Helghast ideology based on Helghan superiority. He re-established hostilities with the ISA in his bid to retake Vekta and exact revenge on the UCN, and this conflict is now known as the Second Extrasolar War.
During the War, the Helghast tried to invade Vekta but the invasion failed. The ISA then launched a retaliatory invasion against Helghan and assaulted the planet by establishing a beachhead at Phyrrus in bid to conquer the capital city, detain Scolar Visari, and bring a swift end to the war. During the first hours of D-Day for the second wave, the Helghast forces set up a defensive perimeter consisting of Arc Pillars. After the Arc Pillars destroyed Avenger Convoy, which was en route to Visari Palace to capture the Autarch, the ISA decided it was best not to move forward as such an action would only result in more losses.
Meanwhile, Alpha team was sent to find the source of the Pillars' power. After finding a Petrusite Grid under the Maelstra Barrens, the ISA Fleet tried to destroy the Grid, but was beset by a surprise attack by a Helghast armada in a daring raid to obtain the Nuclear Launch codes for several ISA nuclear warheads captured by the Helghast in their failed invasion of Vekta. However, the New Sun destroyed the Petrusite Grid, deactivating almost all defenses in Pyrrhus, the capital city. Yet, the Helghast obtained the nuclear launch codes and detonated a nuclear warhead on Pyrrhus, killing all the ISA and Helghast forces within the city.
In a desperate effort to end the war, the remaining ISA forces launched a daring raid against Visari Palace during which they destroyed a massive Arc battery in Visari Square, fighting their way to the palace courtyard and front entrance in a relentless attack. Thereafter, ISA commandos Rico and Sev fought their way through the last of Visari's forces within Visari Palace itself, killing Colonel Radec, military leader of the Helghast troops and personal bodyguard of Scolar Visari himself.
Afterwards, Rico and Sev stormed Visari's throne room to arrest him, but Visari was killed by an enraged Rico. Before he died, Visari swore that he would be seen as a martyr if he was to be killed and that "Helghan will dissolve into Chaos"; that is exactly what happened. Helghan fell into a state of civil war as different political factions rose to claim power. The remaining ISA fleet was destroyed in the process, with the remaining ISA forces were stranded on Helghan with no way of receiving any further aid, and no transportation off planet Helghan.
With Visari dead, the Helghast Military and the main Helghast weapons manufacturer, Stahl Arms, began to wage a political struggle to take control of the Helghast government, while the stranded ISA troops were forced to battle for mere survival. Eventually, the political struggle for control of the Helghast government came to a climax, only made worse by successful operations conducted by the ISA remnant. In a meeting between the Helghast Military leader (and recently crowned Autarch) Orlock and Stahl Arms chairman Jorhan Stahl, a skirmish erupted between forces led by the two leaders, resulting in the death of Autarch Orlock. This plunged the Helghast race into civil war, allowing the ISA forces to destroy Stahl's experimental cruiser before he could enact his plan to eradicate all life on Earth. The resulting petrusite explosions from Stahl's cruiser destroyed a massive space station, the entire Helghast invasion fleet destined for Earth, and violently irradiated all unprotected life on the planet Helghan.
With the ISA forces having escaped Helghan onboard hijacked Helghast strike fighters and currently en route home to Vekta, with at least one, or possibly two most capable successors to Visari's throne killed, and its own homeworld irrevocably devastated by energized petrusite radiation, the Helghan Empire is currently in a state of disarray or even totally destroyed.
(From Killzone Wiki)