Knock-knock MW2
Description Kill 4 enemies with 4 shots during a slow-mo breach in single player or Spec Ops.
Gamer Score 10 Gamerscore
Trophy Type Bronze Bronze Trophy PS3 icon

Knock-knock is a gameplay achievement/trophy in Call of Duty: Modern Warfare 2. It requires the player to kill four enemies with four shots during a slow-motion breach in campaign or Spec Ops. Some Spec Ops missions this challenge can be attempted on are Breach & Clear or Wetwork.

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