How to edit the BM outrocredits?

So I’ve tried multiple things - I directly edited the credits.txt file, multiple parts of ClientScheme.res, but I can’t add anything into the end credits sequence.

What I’m personally trying to do is two things. First, I’m trying to modify - where after it says ‘BLACK MESA’, then when it fades out, I want another thing to fade in and then fade out - I want to put “The BLACK MESA team is…” just like the original HL credits. Then after that start rolling “Senior Developers”

Then at the end of the developers section of the credits BM credits (but before the the special thanks, and in memory of). I want it to fade out again, then fade in and say “Valve is…” and put the devs of the original HL in the credits as well. I’ve tried all of this within the two files above - but now I’m starting to think that I might have to edit the actual credits.bsp in hammer…

Any advice?

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.