Halo 4 Cheats :
Easter Egg - Red vs Blue Episode 4 Easter Egg
On Episode 4, Chapter 2 of Spartan Ops, at the spawn, use a DMR to look all the way at the other spire on the other end of the map. If you look to the right ridge, you'll see the small box. Shoot it, and the RvB intro music will sound.
Later on in the mission, you will hear a spartan named Vic talking about a party with Commander Palmer.
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