A lot of you probably knew this was coming eventually, but didn't know when. Well, here it is. The introduction of the gnome from Episode 2. Complete with Alyx's ability to resist all forms of damage (that Barney didn't seem to have in that one city segment from HL2) minus the unlimited supply of ammo. It always annoyed me when teammates in a game are immortal, but never seem to actually do anything when you really need them to. Especially if it's one of the Call of Duty games on Veteran difficulty.