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 border-world, 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. It's time to choose.

[After accepting the G-Man's offer]
Wisely done, Mr. Freeman. I will see you up ahead...

[After declining the G-Man's offer]
Well, it looks like we won't be working together. No regrets, Mr. Freeman.