Hello,
I’d really like to know how to disable friendly fire in this game. And, yes, I know it’s not hard to stay my fire from friendlies. The reason why I’m really asking this is that I want the consistency between Black Mesa and Half-Life 2 to be optimal.
Actually, it would be better if somebody found a way to enable friendly fire in HL2 (bugless, preferably). If someone could tell me either of these I would be much obliged.
Thank you for replying.
I tried that, and, unfortunately, it bugged up at the lighthouse when I had killed my teammate and he didn’t show up to open the door for me. I killed him on purpose just to test, but what if it really had been an accident?!
Thanks anyway, though.
Hey, that’s what you get for it 
If you want friendly fire that protects ‘quest-essential NPCs’, then tough luck. Of course the game will bug out if you kill an important character! I don’t know, I may try that mod - it sounds fun.
There was friendly fire in the original Half life, if you were worried about canon.
Well, it’s a gameplay mechanic, so I’d say it has little to do with canon. It probably wouldn’t be that difficult to add triggers to the maps for the essential NPCs.
Perhaps I shall do that in the future.
Yeah 
Make it say “Failure to preserve mission-critical personell”
this mod actually “enables” friendly fire in the HL2 campaign, but it’s probably for an older version of HL2 anyway
yeah, i actually tried it yesterday, didn’t even work at all
it was released in 2004, i’m surprised i can’t find any other mod that enables friendly fire
Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.