Merauder, Unlocking The Truth, Exalt, Varials, River Black, Without Warning, Begat The Nephilim, In Your Deathbed, Gator King, and Soul Remnants have all been added to the 2016 New England Metal And Hardcore Festival. The event will take place at the Palladium in Worcester, MA on April 15-16, and previously announced acts include: Killswitch Engage,…