Six albums in, elite New York death-metal squad Skinless remains as brutal and punishing as ever. The breakneck title track and frenzied “Siege Engine” kick off the proceedings with hammering riffs and dizzying drum work, while spine-snapping grooves and flesh-flaying guitar acrobatics lead the way on “Skull Session” and “Cruel Blade of the Guillotine.” The unexpected acoustic intro of “Reversal of Fortune” segues into tolling bells and a harmonized instrumental reminiscent of classic Metallica.