Killswitch Engage will be performing at the 2014 This Is Hardcore Festival, which is being held July 24-27 in Philadelphia, PA; other bands appearing include Converge, Madball, Unearth, Crowbar, Bl'ast!, Slapshot, CIV, Nails, Noisem, Bold, Downset, Xibalba, Dropdead, Power Trip and many, many more. Tickets go on sale April 12 through