You can now use HL source NPCS in gmod, get busy on a contest for best using them!
They're a bit glitchy
The scientists and Barney don't say anything, and if they get hurt, they keep making the same noises over and over, the Vortigaunts leave behind their laser trails if you delete them as they're about to attack, Houndeyes don't chase after the player, they'll only attack when the player is close, the Tentacle's pointy part doesn't hurt, the only way to be hurt by it is to go to it's root, the Zombie and Headcrab have the same stats as their HL2 versions, so the Zombie is able to kill Barney faster than he can in HL:S, the Nialanth doesn't do anything, and you can't be hurt by him
Also, the Grunt can only the SMG
Okay, enough double posting for now
C'mon big guy, doesn't the name of this drink sound at all familiar?

Poor oblivious Heavy doesn't even know he is in a game let alone a game that's piled together with two (technically four) other games