From Call of Duty: Ghosts' encased Rupee-shaped award for "Most bushes cut and pots smashed," to Call of Duty: World at War's hidden beach ... pretty memorable Easter eggs and references.

2. All Ghillied Up - Call of Duty: Modern Warfare Just like Vendetta in World at War, this mission is all about proper resilience and patience. One wrong step, and you are gone. All Ghillied Up ...