The topic of what the Silent Fang called us is pretty popular. I don't know the precise answer, because Variks never gave us a translation, but we know it's an insult. Something cool I discovered recently is that the line is actually also already used as combat dialogue by (at least) Captains in normal gameplay. The line used in the mission is quite distorted, but getting a nice clear musicless recording is possible since it's just a regular mob line too. Which leads me to a request: if anyone is able to collect dialogue from the Fallen and upload a collection on YouTube, we'll be able to further interpret the language. The more unique lines, the better. We've been given what's essentially a cipher, like a game of Wheel of Fortune, so from there we can cross-reference words and maybe translate more lines. The only things I request is that your recordings are without music and (as much as possible) without much background noise (like gunshots or ambient sounds). Just helps the ear focus on the phonetics.