1. Chop down the boards with the axe.
2. Shoot the electric box with the Tesla Launcher from the Mystery Box.
2. Shoot all of the electric boxes by all nine perk machines with the Tesla Launcher (you'll know you shot it correctly when the cover falls off).
3. Kill 100 zombies under the pyramid.
4. Release the souls on the generator under the pyramid.
5. You now have permanent perks even if you go down. The buyable ending door has now opened along with the 10 point Pack-a-Punch machine. Purchase the 93,500 buyable ending to complete the map.

Here's a video guide: https://youtu.be/9gk7d9P9DIA