Great initiative @Thraeg! I haven't listened to a lot this year so not sure I even have 10 albums that blew me away, but I'll contribute where I can. :)
A good genre to kick things off with. I love thrash. :)
Wretched Soul - The Ghost Road
I missed this one, but it sounds right up my alley! Good stuff, added to Gplay library forthwith and shall listen tomorrow!
Seax - Speed Metal Mania
Didn't hear this but it doesn't sound like my thing.
Vektor - Terminal Redux
I think you can stop now, this is the album of the year right here! I loved this thing. ;)
Testament - Brotherhood of the Snake
Was never a huge Testament fan, even in the early days.
Witchery - In His Infernal Majesty's Service
I was a fan in the early days with Witchery's first album of fun graveyard thrash Restless and Dead, but they fell off my radar soon after. The sound didn't click with me anymore and this new one didn't do much much for me either. Admittedly I didn't give it a real chance, but I could kind of tell it was all a bit happy.
Destroyer 666 - Wildfire
Like Witchery I didn't give this much of a chance either, despite being a bit of a longtime fan - they are (or were) Australian band after all! I think it all sounded a bit 'pub rock' and didn't quite have the dark feel or get the head banging. Maybe it needs more of a chance? I may put it back in rotation and see if the mood strikes me.
Metallica - Hardwired to Self-Destruct
Well, Metallica formed my essence way back in high school with their first 4 albums, so I was expecting to hate this. :) But I actually quite enjoyed it for a while so maybe I subconsciously cut them slack. Or maybe there is some legitimately decent material on here! Some of the songs even stuck in my head for a bit, some dragged on, some weren't so good; maybe a rocking half hour of material stretched out too thin. They need an editor.
Apart from Vektor, for this year I would add German blasphemers Desaster, who still play some consistent quality raw evil thrash. Grimy and nasty, I always had a thing for the old German thrash bands!
This kind of stuff makes me throw up the horns and start banging in blind reflex. :)