I was doing research into the weapon history of the Ambassador and got sidetracked when I found this other wiki discussing Robin Walker. On this page, there was an images section with an image of the Valve Rocket Launcher.
There are two big things about this image, one the weapon stats are different from the ones listed on the modern page and modern videos. Second is that when I used google image search on it I discovered this page that claims to be a tutorial of how to modify the game files to gain access to a Valve version of the Equalizer, and with that apparently more weapons in the game as well.
For now I am just putting it out there because I do not have the time to investigate it thoroughly right now, but would like to see if its something that's worthy of my time. I additionally wanted to ask if anyone knew where I could find a copy of the game from October 31, 2010/older versions. The tutorial was created back when, so I would like to see if there were different stats present on the weapons overtime (granted the tutorial even works and still works on modern versions).