- The whole mod is basically a videogame based on Apocalypse Now and Heart of Darkness, so there is a plethora of references to them.
- "Me so horny. Me love you long time."
- A Drill Sergeant Nasty is heard shouting at his recruits at the beginning of the game.
- A portion of the game is spent in Raccoon Military Base, where you have to find three different colored crystals and colored keys to progress.
- "Look over there! A three-headed monkey!"
- "Damn, I'm good."
- "When there's no more room in hell, the dead will walk the earth", written on a wall by the man who had taken the same mission as Percy earlier.
- "OH GOD! THEY KILLED KENNY! YOU BASTARDS!"
- From the briefing in the Napalm Edition: "Stop staring at my secretary, Freeman! This isn't a high-end videogame where your sidekick is some hot chick you can ogle with a set of binoculars!"
- Likewise, you can play an arcade game of Half-Life 2.
- "But by myself, I can run like Benny Hill."
- "You wanna dance? This is called Rickrolling, bitch!"
- "You have picked up a chainsaw! Go find some meat!" Complete with a remix of At Doom's Gate.
- "Di di mau!"
Shout Out / Heart of Evil