Dog carries the dead body of you-know-who and places it on the ground.
A vortigaunt goes up to the screen and says:
"Freeman should be wise and lick my eye."
Then we are introduced to a series of really musclar rebellions who shout all the time.
Then Kleiners voice is heard.
"Only they can...
No, but I called him Chuck when I first saw him. He kept holding back the door ordering me to run on, but I just sat down by him and started having a conversation.
Apparently, before the portal opening, he worked as a Financial Director for Ben N Jerry's Ice Cream.
Good guy.
Shame about...
Dog will go with Alyx and Gordon in the chopper, but it will crash land and the 3 have to survive on baked bean rations. Realising that they need the beans heated up, they'll turn Dog into a microwave and then the credits roll with the Gman doing an erotic dance in the background.
Ofcourse Valve wont tie up all the ends.
They're not idiotic enough to do so.
As for learning about who the Gman is, I dont think we'll ever be told.
It'll dissapoint some, and all our personal ideas about it will end - an abrupt ending and I dont think that will be good for the community now...
Gas pipes beneath them, and shooting the barrels triggered the pipes to explode?
Actualy, I think Valve didnt know themselves. It's all part of the mystery and confusion within Ravenholm.