Nerf Now!! 2149
Do I believe the leaked script for Half Life-3 is «official»? Not really.
Perhaps they had vague ideas of what would happen on Eps. 3. Maybe the aliens won, maybe Freeman married Alyx but even this kind of stuff isn't set on stone.
At best I believe this script was something the writer would like to have written if he had no need to appease anyone but himself, but I very much doubt that leaked script would have been approved, or even show as draft if he was writting professionaly.
Still a better story than Twlight thought.