Wait for the Steam sale and get it for PC instead, if you've ever liked games like Baldurs Gate. The console version is alright, but unless you dislike BG, Icewind Dale and so forth, the PC version is preferable.
If I remember correctly, there is a way to cheese the Flamelurker. I believe there's a way to make him get stuck on something, and you can kill him slowly but surely. If you do wanna continue playing it, maybe try and google it and see if its doable for you.
"Gamers" dont get frustrated when another CoD comes out. SOME gamers do. Millions still purchase those games each and every time. Same case here. Plenty of people get frustrated with Nintendo for its reliance on old franchises, but plenty others still enjoy them.