Nihilanth

The Nihilanth launching energy balls at player.

Spoiler Warning
Some information on this page may contain plot spoilers. Continue reading at your own risk.

Nihilanth is the final Xen boss in Half-Life and also the eighteenth chapter of the game.

Quotes from Half-Life 2 suggest that the Nihilanth was a Combine product. Judging by its appearance, it is a cybernetically and genetically enhanced Alien Controller that had been controlling the Vortigaunts for eons, much like Breen controlled the human race before Gordon Freeman managed to destroy the citadel of City 17.

Quotes

• "Thieves... you all are thieves... you all are..."
• "Alone... not you alone... not you alone..."
• "The last... I am the last..."
• "Deceive you... will deceive you..."

Maps

The following .bsp comprises this chapter.

• c4a3

Half-Life Chapters
Hazard Course t0a0	Black Mesa Inbound c0a0	Anomalous Materials c1a0	Unforeseen Consequences c1a1
Office Complex c1a2	"We've Got Hostiles!" c1a3	Blast Pit c1a4	Power Up c2a1
On a Rail c2a2	Apprehension c2a3	Residue Processing c2a4	Questionable Ethics c2a4d
Surface Tension c2a5	"Forget About Freeman!" c3a1	Lambda Core c3a2	Xen c4a1
Gonarch's Lair c4a2	Interloper c4a1a	Nihilanth c4a3	Endgame c5a1