I received a call from a Russian chap with a heavy accent. I am a native English speaker and typically have no problems understanding accents. I've been in the Silicon Valley for years to no big deal. In this case -- it was a big deal. I could barely understand the chap interviewing me. It made me very slow to reply and I had no idea if I was answering what he was asking. Now I am a C++ guru. I have knocked it out of the part in interview after interview in this area. This guy asked one question. I did not fully understand it. The answer ultimately required you to know to use an STL hashed-map. I was just rolling my eyes wondering "how doe these people hire anyone"? One of the oddest interviews ever. One question and a guy I could not understand. 15 minutes tops. I already had other offers so I was already pretty turned off by Roblox. I put Very Difficult b/c I could not understand the guy.