Like with Zombies in Spaceland, the player must first complete the map's main easter egg before they can insert the cheat code. In the map Rave in the Redwoods, there is a code that can be found in the bathroom in the cabin on Turtle Island, which can only be seen in Rave Mode.
In the lobby menu, if the map is selected as Rave in the Redwoods, the player can insert the code, which is Right, Left, Left, Down, Down, Right on the D-Pad of the player's controller. A picture of Kevin Smith will appear on the bottom of the menu, and when the player starts the match, they will be Kevin Smith. The achievement will also then unlock.