Garry’s Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left to entertain themselves. The player is in a world where objects can be created and destroyed on demand. Where people can be created and destroyed with the click of a mouse. A world made for him. A world he made.
A triumphant RED Heavy poses over the body of a Combine Soldier with shotgun in one hand and a sandwich in the other.
Combine soldiers are human too you know.
transhuman, mind you
Even then they're really more machine than human. Plus they don't have memories of their human life since I think the the Combine wiped their human memories during the process so they would be merciless against humans.
Humanity already did.