This will be a review after the post-last one. Since Reload should have been the last one.
I do not listen much Death Magnetic, I can't recall tunes after I reading the titles, with a couple of notable exceptions. Hetfield sings in a higher pitch he used to, like falsetto or something. I've problems with The Unforgiven over 9000 (with Roman numerals: MCCIↃↃↃ), I wish they would stop with this (although this one might be better than the II). But this album is more of a "back to the roots" than St. Anger, although the sounding feels similar. But they have normal drums and solos. And more thrashy than just edgy.
New face: Rick Rubin the producer of this, and Robert Trujillo is manning the bass - on the previous album both was Bob Rock. From what I read while they played under the direction of Bob Rock, they recorded more in experimental, improvisational fashion, making decisions on the fly, but with Rubin, they sat down first to talk it through, learn the mostly ready songs, and go to the studio and record material, leaving the writing out of there. The tracks do seem more whole, and not some ill fitting patchwork.
Credits I dunno who gets what and how much, I read all the band members participated in writing their shit.
The End of the Line - because why not.
All Nightmare Long - this one I remember and like.
Suicide and Redemption - I like this very very much. Instrumental. Reminding me of NFS 3: Hot Pursuit soundtrack. Great.
Cyanide - This is a quite ok one, the rest of the songs meh, compared, although most has enjoyable parts, wouldn't wrote them off.

In 2016 they released their 10th album, the Hardwired... to Self-Destruct, which I have not listened yet (only one song I think, maybe came out as a single before the album, I dunno). Maybe I'll give it a listen and give a reaction/review of it on the next occasion.
Ofc I'm gonna buy it otherwise Lards will sue my ass.