Hunter Killer is the third mission in the campaign of Call of Duty: Modern Warfare 3. The player once again takes control of Sgt. Derek Westbrook as he and his squad goes deep behind enemy lines to launch a Russian Submarine's missiles against its own fleet.
The level starts out in a flooded tunnel with the squad maneuvering away from New York's shoreline. Linking up with Seal Team 6, the group continues on to its target, the Russian Oscar II-class SSGN. They force the submarine to surface by planting multiple bombs on its side to create a hull breach, and proceed to infiltrate into its interior. After fighting through the submarine's crew, the team reaches the Control Center and launches the its missiles against its own fleet.
E3 "Hunter Killer" Gameplay