Lambda Incident

*"It all started when a crystal was inserted into the device, then all the sudden, aliens were rampaging across the facility. Both the military and the Black Operations tried to contain the invasion, but to no avail. It was everyone for themselves."* -UndeadShadow64

## Lambda Incident

### Cause

The Anti-Mass Spectrometer goes critical after the Xen crystal sample "GG-3883" is inserted, causing a Resonance Cascade.

### Outcome

* Death of The Nihilanth
* Vortigaunts are freed from slavery
* UndeadShadow64 and Draconias789 are held in stasis
* Black Mesa is destroyed by a thermonuclear bomb
* Portal storms spread across Earth
* Large amounts of Xen wildlife arrive on Earth
* Earth governments set up quarantine zones across the planet
* The Combine forces invade Earth, starting the Seven-Hour War

### Casualties

Heavy casualties for all parties.

The **Lambda Incident** [also known as the **Black Mesa Incident**] was the event that resulted in the invasion of the Xen forces. Ultimately, after the Nihilanth's death, portal storms spread across planet Earth, which led to the eventual invasion of the Combine.

## Lore

On May 16th, 2025, the scientists of the Sector C Test Labs were in full preparation for the experiment, but was delayed due to UndeadShadow64's late arrival. The Sector C staff boosted the power to 105%, causing blackouts and equipment problems to occur all across the facility. As UndeadShadow64, donning the Mark IV HEV Suit, enters the test chamber and activates the Anti-Mass Spectrometer. A minor issue was noticed, but was dismissed. The crystal sample was pushed into the device and begins to violently pulsate and expand. The immediate effects were cataclysmic, resulting in a dimensional rift being opened between Earth and Xen. The Xenian creatures relentlessly attack the Black Mesa personnel. Not only that, the Resonance Cascade caused massive structural damage. As the aliens kept wrecking havoc, the military was called in an attempt to resolve the situation. Along with dispatching the aliens, the military have also initiated a containment protocol, started killing anyone who had knowledge of the incident. Their assault on the facility was successful, managing to take control of the surface facilities and setting up fortified outposts. As the battle escalated, many personnel were forced back into the depths of the facility. At the same time, UndeadShadow64 had become the military's main target, believing he had caused the Resonance Cascade on purpose. Meanwhile, scientists at the Lambda Complex were able to launch a satellite rocket in space to reverse the effects of the Resonance Cascade. On the second day, the US government sent the Black Operations to kill all witnesses, including the military. Their goal being to detonate a thermonuclear bomb to destroy Black Mesa. At some point, the Black Mesa desert has become a massive warzone, with both military and aliens clashing at each other. Despite the military's best efforts, they have proven to be ineffective against the hostile aliens, they abandoned their mission and evacuated the facility. As UndeadShadow64 made it to Sector F, he is informed that a powerful being is holding the rift open, leaving the scientists no other choice but to send him to Xen to kill it. By the time, many of the Black Mesa personnel have managed to escape the facility. UndeadShadow64 traversed through the Borderworld, eventually coming face-to-face with the Nihilanth. Through his willpower and determination, he kills the creature. After the Nihilanth's death, UndeadShadow64 was met by the G-Man, who placed him into stasis for the next 20 years.

## Known Survivors

* ***Araiguma***
* ***BakedGlue***
* ***Carley***
* ***DeadxClownXXX***
* ***Draconias789***
* ***GirlyPrincessXOX***
* ***Hakuyo***
* ***Jaybil***
* ***Moonzombie1***
* ***Murp***
* ***Orange\_Bubble\_Tea***
* ***Reaper***
* ***Shazanov***
* ***Spiker-X***
* ***UndeadShadow64***
* ***X123Mini456***

## Allies

* **Black Mesa Personnel**
	+ ***Araiguma*** [Security Force]
	+ ***BakedGlue*** [Service Personnel]
	+ ***Carley*** [Resident]
	+ ***CarnageGameWorld*** [Science Team; deceased]
	+ ***GirlyPrincessXOX*** [Security Force]
	+ ***Hakuyo*** [Administrator]
	+ ***Jaybil*** [Service Personnel]
	+ ***JjRollAnother01*** [Science Team; deceased]
	+ ***Moonzombie1*** [Science Team]
	+ ***Natsudragnir-F*** [Service Personnel; deceased]
	+ ***Orange\_Bubble\_Tea*** [Security Force]
	+ ***Reaper*** [Science Team]
	+ ***Scratchykai*** [Science Team; deceased]
	+ ***SmoshiWorldPie*** [Security Force; deceased]
	+ ***Spiker-X*** [Security Force]
	+ ***UndeadShadow64*** [Science Team]
	+ ***X123Mini456*** [Service Personnel]
	+ An unknown amount of scientists/civilian workers
* **Federal Government of the United States**
	+ ***DeadxClownXXX*** [Hazardous Environment Combat Unit]
	+ ***Draconias789*** [Hazardous Environment Combat Unit]
	+ ***Murp*** [Hazardous Environment Combat Unit]
	+ ***NJ32power*** [Hazardous Environment Combat Unit; deceased]
	+ ***Shazanov*** [Hazardous Environment Combat Unit]
	+ An unknown amount of HECU/Black Ops soldiers

## Enemies

* **Xen forces**
	+ **Wildlife**
		- Barnacles
		- Bullsquids
		- Gonarch†
		- Headcrabs
		- Houndeyes
		- Ichthyosaurs
		- Snarks
		- Tentacles
	+ **Military Units**
		- ***Nihilanth***†
		- Xenian Aircrafts
		- Xenian Controllers
		- Xenian Gargantuas
		- Xenian Grunts
		- Xenian Slaves