Listen to the sound clip KILLING. from Nikolai Belinski Sounds: Call of Duty - Zombies: KILLING. KILLING. This sound is from Nikolai Belinski Sounds: Call of Duty - Zombies Nikolai Belinski Soundboard from Call of Duty: World at War. Contains over 230 sounds including anger, drunk, making threats, complaining about power, and more. Go to the full soundboardwith more sound clips Search