You need to buy them off PS Store, they cost $14.99 each.
And you can't really get out of five, you either die or use a glitch. But all known ones have been patched up.
So I am trying to get married with Aela but accidentally missed the ceremony and made her mad. So I did the make up with her thing and set it again but now it isn't saying when it is and everytime I talk to her she just says the wedding is soon.
Once you buy or obtain a weapon from whatever method it is yours forever. You don't have to do anything. Since you can only equip three, with one being Wrath's sword and the other Death's Scythe, you must choose what the third one will be by going to the start menu and equiping it to the third slot.
Musical Easter Egg - Moon
The only zombie map with multiple Musical Easter eggs that players can activate.
Song: Coming Home
How to Activate it: By pressing the action button (X) on the three teddy bears with P.E.S. Masks on. The first on is on a red crate located between tunnel 6 & 11 entrances, near the "Simon Says" computers. The second is near the M16, open the door near the M16 and it should be above the players. The third is found close to the Stamin-Up/Semtex in a hole in the wall, where the helmet should be sticking out.
How to Activate it: Holding the action button by a computer in the lab next to the door to the Bio-dome.
Song: Coming Home (8 bit version)
How to Activate it: Use the action button (X) on the radio at the end of tunnel 11 on top of some computers, near power room door.
Song: Pareidolia (8 bit version)
How to Activate it: Obtaining a Film Reel and pressing the "use" button near a computer in the labs, and can only be heard in close proximity to the terminal.
How to Activate it: Getting the "One Giant Leap" trophy. Acquired by having the excavators blocking both tunnel 6 & 11 and a player must be trapped in the spawn area. The player then must be down and die, after than they must re-spawn, resurrect, next to their teammates.
Musical Easter Egg - Shangri-La
How to Activate it: Using the action button on all three meteor fragments. First one is in the spawn area, behind the Quick Revive in a pile of rubble. The second one is by the bride right beside the Juggernaut/Speed-Cola perks. The third one is located within the broken wall slightly across the Stamin-Up vending machine.
Musical Easter Egg - Call of the Dead
Song: Not Ready to Die
How to Activate it: By using the action button on all three meteor fragments. The first is at the spawn area on a set of metal crates, between the water and pathway up to the lighthouse. The second is on the boat with the power switch, it is three floors below the power switch in the dinner area. The third on is in the lighthouse in the room with the PhD Flopper, underneath a small table with a clock on it.
Musical Easter Egg - Acension
How to Activate it: Use the action button on all three of the teddy bears holding a sickle. The first one is in the Centrifuge Room, up the stairs, turn right, and on the end of that walkway is the first bear. The second one is near the Lunar Lander closest to the Stamin-Up is a gate; under the red star is a teddy bear. And the third is by the lunar lander past Speed Cola, it is on top of the wall opposite of the mystery box location.
Musical Easter Egg - Five
Song: Won't Back Down
How to Activate it: Use the action button on all three red telephones. The first telephone is right next to the quick revive. The second is on a desk in the room with the power switch. And the last one is on the table in the Pack-a-Punch room.
Musical Easter Egg - Kino Der Toten
How to Activate it: Use the action button (X) on the three meteor fragments scattered around the map. The first fragment is found in the starting room on the first floor next to the right staircase in a corner. The second can be found n the room between the alley and the stage, it's on the shelf of a book case, with letters on it. And the final one is in the dressing room on a stand leaning up against a few mannequins.