Earn the "Double Trouble" achievement in the single-player campaign mode of Call of Duty: Black Ops with this gamer's guide! In order to unlock this achievement, you will need to use only dual-wield weapons to escape Kowloon.
Call of Duty 7 (COD: BO) is the seventh installment in Activision's popular Call of Duty series of military-themed first-person shooter video games and the first to be set during the Cold War. COD7 is available for the PC, Xbox 360, PlayStation 3 (PS3) and Nintendo Wii.
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Use the explosive bolts to kill 30 enemies in the campaign.