-Endgame: after defeating a giant kitten with headcrabs for paws that was guarding the way to all salvation of mankind- :
Gordon collapses onto his back, Alyx rushes over, distraught:
Alyx: "Gordon! oh my god! what's happened?!"
Gordon: "A... Al... Alyx..."
Alyx: "Yes Gordon, my god! you're speaking to me... please... do go on"
*Alyx looks deep into Gordon's eyes longingly*
Gordon: *shuddering* "Alyx... Please... HEV... so... full of... piss... and... shit... so... s-s-s-septic... take... c-c-c-crowbarrr... pry... crotch... open..."
*Screen fades to black-, white words materialise: :
"Gordon Freeman, Status: Terminated due to HEV design oversight"*
... yeah okay, so it's not a sentence. But you know, it fits coz it's so dramatic n all.