Call of Duty: Black Ops Escalation DLC interview with game design director David Vonderhaar. Robert Welkner of COIN-OP TV with an exclusive visit to Treyarch studio for a one-on-one interview on the new Escalation Maps. David gives load-out recommendations and talks about how Treyarch tries to improve things for snipers. COD Black Ops Escalation DLC is available on the Xbox 360 May 3, 2011.