He always falls.
I thought he only falls down if you step on the bridge, otherwise he just stands there and nothing happens, the bridge doesn’t collapse.
He does stay there and look scared until you step onto the bridge. I have left it like that for 30 minutes before, and he just stood there.
This was not on source though… so he might fall idk.
Oh my god that vid was funny XD.
indeed
It was funny how they overreacted to his perfectly accurate statement.
That’s impossible, at Lambda Core the scientist that activates the core must not be killed, or you fail the game. 
the achievement could be let all the scientists and security guards die, by your hands or enemy hands because he’s killed by controllers when you teleport
No…
Half-life you jump on the portal and you hear a scream.
Op force: Freeman jumps on the portal and the zone where the scientist is explodes and falls.
I meant that the idea is bad.
And you can kill them after they are done. As a matter of fact, the guy in the core DOES die, if you play opposing force, you see him die. But since opposing force has been discredited several times now, I doubt I can use it.
I think you hear him scream as you telelport… and an explosion.
Not exactly, you can also get into the teleport without him dying. It es very likely that he gets killed after you arrived in Xen though.
Events that a lot of ppl belives that are cannon from Op4:
Destruction of black mesa
Black Ops sended to kill everything left: Aliens, scientists and millitary.
Hgrunts pulling out but leaving some of them behind.
Scientist dying after freeman teleportation.
G-man likes to help ppl who remember him at himself.
yeah, but unfortunetly, every time I bring Op4 in any thread, someone says its non-canon. because it was made by Gearbox, even though the events fit in with each other.
i wonder if Adrian Shepherd will be in the last Half Life, whether it be episode or game
Valve said that they would like to use Shepherd again in the future so I wouldn’t doubt about it.
thats good. He and Gordon are two of the three most badass people I have ever played as
source?
Explanation how I found it:
I searched in some wiki about portal and found this: (This one is from combine overwiki, I searched it on another anyways)
After that in the other wiki said that they asked him something about Shepherd and they said that they wish to use adrian in the future.
EDIT: GOT TIME AND FOUND IT ON THE COMBINE OVERWIKI!