I got in on the last glitch (or whatever you'd call it). For reasons which I wont bore you with right now, I left one of the game keys that I got from that unused for 10 weeks after I redeemed my AMD code. When I went to claim the key (which I hadn't bothered to copy down anywhere) I found that they had changed the way that the AMD account page worked. I was first prompted to verify my AMD account by entering a code that they'd text me. Alternately, I could have them send me an email with the code, but there'd be an additional 24 hour wait period if I chose email.
After I verified my account, they wanted me to verify that I actually owned the video card. I either needed to submit a receipt showing that I bought it, or download a program to check if I had the card installed in my computer. Needless to say, that was impossible for me to do. And it wouldn't let me check my key page until I did. Luckily for me though, I remembered that they sent emails verifying redemption of an AMD Never Settle code, and those emails contained all the keys for the games that I chose.
But something had clearly changed with the way that they handle the AMD accounts over the 10 weeks since I had redeemed my code. Even if Newegg has another such fire sale, I'm not sure if anybody would be able to claim their games. That is, unless they actually do have one of the AMD video cards that you need to buy to legitimately take part in the offer.