Think you folks are badly overreacting. Ive just finished Deathfire and I found it a rather enjoyable read. Infact I would rate it a good bit higher than Kyme's most recent book, Rebirth which I found to be fairly bland and uninspired.
Deathfire introduces some rather vile word bearers and showing just what the legion is devolving into. And what the sallies encounter inside the Ruinstorm is not your typical daemons, giving a really nice horror vibe as the daemons toy with their victims instead of the usual killmaim type daemons in more bolterporn books.
A couple teasers. The Death Guard, pre Nurgle, features heavilly. and we get a good look at Imperium Secundus.
If I have to give a single niggle to the book. I felt..