- G-Man: [the G-Man finally speaks to Gordon] Gordon Freeman, in the flesh - or, rather, in the hazard suit. I took the liberty of relieving you of your weapons. Most of them were government property. As for the suit, I think you've earned it. The borderworld, Xen, is in our control, for the time being... thanks to you. Quite a nasty piece of work you managed over there; I am impressed. That's why I'm here, Mr. Freeman. I have recommended your services to my... employers, and they have authorized me to offer you a job. They agree with me that you have limitless potential. You've proved yourself a decisive man so I don't expect you'll have any trouble deciding what to do. If you're interested, just step into the portal and I will take that as a yes. Otherwise, well, I can offer you a battle you have no chance of winning... rather an anticlimax after what you've just survived. Time to choose...
- Security Guard: [inspecting a prototype 'Tau Cannon'] What is this thing, some kinda weapon?
- Scientist: Put that down, it's a prototype...
- Security Guard: [Blows a hole in the wall with it] Man! Why aren't we using it?
- Scientist: It's much too unpredictable, don't let it overcharge!
- Security Guard: What d'ya mean, "overcharge"?
- Scientist: [Tau Cannon overcharges, killing them both] NO!
- Black Mesa Transit System Announcer: Good morning, and welcome to the Black Mesa Transit System. This automated train is provided for the security and convenience of the Black Mesa Research Facility personnel. The time is eight-forty seven A.M... Current outside temperature is ninety three degrees with an estimated high of one hundred and five. The Black Mesa compound is maintained at a pleasant sixty-eight degrees at all times. This train is inbound from Level Three dormitories to Sector C Test Labs and Control Facilities. If your intended destination is a high security area beyond Sector C, you will need to return to the Central Transit hub in Area Nine and board a high security train. If you have not yet submitted your identity to the retinal clearance system, you must report to Black Mesa personel for processing before you will be permitted into the high security branch of the transit system. Due to the high toxicity of material routinely handled in the Black Mesa compound, no smoking, eating, or drinking are permitted within the Black Mesa Transit System. Please keep you limbs inside the train at all times. Do not attempt to open the doors until the train has come to a complete halt at the station platform. In the event of an emergency, passengers are to remain seated and await further instruction. If it is necessary to exit the train, disabled personnel should be evacuated first. Please, stay away from electrified rails, and proceed to an emergency station until assistance arrives. A reminder that the Black Mesa Hazard Course decathlon will commence this evening at 1900 hours in the Level Three facility. The semi-finals for high security personnel will be announced in a separate secure access transmission. Remember, more lives than your own may depend on your fitness. Do you have a friend or relative who make a valuable addition to the Black Mesa team? Immediate openings are available in the areas of "Materials Handling" and "Low Clearance Security." Please contact Black Mesa personnel for further information. If you have an associate with a background in the areas of "Theoretical Physics," "Biotechnology," or other high-tech disciplines, please contact our civilian recruitment division. The Black Mesa Research Facility is an equal-opportunity employer. A reminder to all Black Mesa personnel: Regular radiation and biohazard screenings are a requirement of continued employment in the Black Mesa Research Facility. Missing a scheduled urinalisys or radiation check-up is grounds for immediate termination. If you feel you have been exposed to radioactive or other hazardous materials in the course of your duties, contact your radiation safety officer immediately. Work safe, work smart. Your future depends on it. Now arriving at Sector C Test Labs and Control Facilities. Please stand back from the automated door and wait for the security officer to verify your identity. Before exiting the train, be sure to check your area for personal belongings. Thank you, and have a very safe, and productive day.
- HEV Suit: Welcome to the H.E.V. mark 4 protective system. For use in hazardous environment conditions. High-impact reactive armour activated. Atmospheric contaminant sensors activated. Vital sign monitoring activated. Automatic medical systems engaged. Weapon selection system activated. Munition level monitoring activated. Communications interface online. Have a very safe day.
- Eli Vance: [after the experiment fails] Why didn't they listen? We tried to warn them.
- Scientist 2: I never thought I'd see a resonance cascade, let alone create one.
- Eli Vance: Gordon, you're alive! Thank God for that hazard suit. I'm afraid to move him and all our phones are out. Please get to the surface as soon as you can and let someone know we're stranded down here. You'll need me to access the retinal scanners. I'm sure the rest of the science team will gladly help you.
- Scientist: Gordon Freeman - it is you, isn't it? The Science Team has been tracking your progress with the Black Mesa security system. Unfortunately, so has the military. That suit of yours is full of tracking devices. Still, it's better than going naked in this place. It's cold in there, and you'll have to hurry. It could sap your suit power in a matter of moments! If you're bent on reaching the Lambda Complex, then you'll want to keep to the older, industrial areas where the security system is full of holes. It's worked for me, so far.
- 'Forget About Freeman' officer: [Over a dead soldier's radio] Come in, Cooper! Do you copy? Forget about Freeman, we're abandoning the base. If you have any last bomb targets, mark them on the tactical map. Otherwise, get the hell out of there! Repeat, we are pulling out and commencing airstrikes, give us targets or get below!
- Scientist: [to HECU soldiers, shortly before being shot by them] Take me with you! I'm the one man who knows everything!
- Soldier: I didn't sign on for this shit. Monsters, sure, but civilians? Who ordered this operation anyway?
- Soldier: Forget about Freeman, we are cutting our losses and pulling out! Anybody left down there now is on his own, repeat, if you weren't already, you are now!
- Security Guard: [to Gordon] Mister, if you can get the power on, that train will take us straight to the surface. I would try it myself, but it's a long way down the generator room, and there are... things, in the way...
- Eli Vance: Ah, Gordon. Here you are. We just sent the sample down to the test chamber.
- Scientist 2: We boosted the anti-mass spectrometer 105 percent. Bit of a gamble, but we need the extra resolution.
- Scientist 3: The administrator is very concerned that we get a conclusive analysis of today's sample. I gather they went to some length to get it.
- Eli Vance: They're waiting for you Gordon, in the test chamber.
- Security Guard: [shooting with a pistol at a sixty foot high 3 headed creature] Eat this, you outer-space octopus!
- Scientist: [to Gordon] Do you know who ate all the donuts?
- Scientist: Well, so much for the government, their idea of containment is to kill everyone associated with the project! Judging by your hazard suit I'd say you were part of what went wrong, isn't that right? Now look, if anyone can end this catastrophe it's the science team in the Lambda Complex at the opposite end of the base. With the transit system out I couldn't tell you how to get there, but there's an old decommissioned rail system somewhere through here, beyond the silo complex. If you can make it through the rocket test labs, you might be able to worm your way through the old tunnels to track down whatever's left of the Lambda team. You can trust them. You can trust all of us. Good luck.
- Security Guard 1: Do you think there's a cold beer for us at the end of all this?
- Security Guard 2: Don't bet on it.
- Scientist: Do you think we should appeal to the alien authorities?
- Scientist: Absolutely not!