There are Easter Eggs that have been hidden throughout all three main playing modes: Campaign, Zombies and Multiplayer. This guide aims to help you uncover and locate every last one of them and will be updated as more are inevitably discovered. Heres the list of Eggs I know of so far:
Single Player Campaign Easter Eggs
Here is a list of the single player campaign Easter Eggs listed by mission and in order of appearance:
1. Thor's Hammer:
After using the wingsuits at the start of the mission and crawling under the vent with Harper, you'll need to eliminate the enemies in the immediate area (some have cloaking devices). When you drop down into the area, instead of moving forward, immediately turn left and follow the wall until you drop down to a ledge below. Now look along the wall to the right and you should spot a small cave. You will find the hammer inside.
1. After Credits Concert:
After completing the game, let the credits roll in their entirity. Once they have come and gone, a scene will play with the main characters of the campaign story playing a set with the band avenged sevenfold. Kind of strange and pointless, but entertaining none the less.
Zombie Mode Easter Eggs
TranZit: Green Run
The following Easter Eggs can be found and accessed through the Zombies TranZit mode:
1. Nacht Der Untoten:
Fans of call of Duty: World at War will know of Nacht Der Untoten, the very first Zombies Mode map that was unlocked after completing the game. This very same level can be found in Tranzit mode. To reach it, you need to jump off the bus between the Farm and the Power Station and work your way through the cornfield. Eventually you will come to the ruin that perfectly resembles the original, if a little worse for wear.
2. Alternate Music:
To change the music up on the map, you can track down and find three hidden teddy bears scattered across the various locations in Green Run. When you find them, walk up to them and hit the interact button and a sound will play, once all three have been activated the music will change. You can find the bears in the following locations:
On a bench in the Bus Depot in the first room you spawn in.
At the farm, in the farm house on the second floor.
At the town, in the bar. 3. Tower of Babble:
The Tower of Babble is TranZit's big Easter Egg and it requires a bit of time and effort. It is actually covered in the above Zombies guide.