"Back to the Zombies" Easter Egg Guide:

REQUIREMENTS:
All 5 challenges must be completed to begin the Easter Egg (opens Pack-a-Punch and enables Power). You can find a challenge at each Perk Machine by looking for the torches.

EASTER EGG:
1. Once all challenges are complete, head over to the phone booth in Lou's Cafe and interact with the telephone. This will trigger a few opening lines from Doc Brown.
2. Next, head over to the clock tower and collect the hoverboard sitting on the ground to the left of PaP.
3. After that, place the hoverboard inside the DeLorean. This will then trigger more lines from Doc.
4. Collect the Almanac located on the ground to the right of Deadshot just outside of the Essex Theater.
5. Place the Almanac in the bucket next to the Texaco pump station.
6. You'll then need to burn the Almanac, which can be lit using the jerrycan located in the same area, between the two pumps. This will begin a protection phase (1m 15s), where zombies will target only the bucket. If they swipe at the bucket 5 times, you'll need to restart the step and try again.
7. Once that's complete, return to the DeLorean and charge it up with 35 souls. Again, this will trigger another line from Doc, for which you'll then need to interact with the DeLorean. After that, keep an eye on the clock tower.
8. Using a PaP'd weapon, shoot the orb from the base of the clock tower's weathervane around the map until it ends at the DeLorean.
9. From there, all that's left to do is purchase the buyable ending ($25k and price increase by players numbers). This will then trigger a mini-endgame cutscene.

SHOOTABLES:

There are 5 shootables (Noahj's logo) across the map, each one giving a random power up. Once all 5 shootables have been triggered, a free PaP power up will spawn on the player who triggered the last shootable.

GUIDE BY: Glitch