Call of Duty: Black Ops Annihilation 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 Annihilation Maps. David responds to questions about balancing ‘perks’ in the game, how and when they decide to start creating DLC maps and on the decision to remake the ‘Cliffs of Hazard’ map (now called Hazard) from Call of Duty: World at War.