How to unlock the Pack-a-Punch machine in Call of Duty: Black Ops 4 Zombies map, Ancient Evil

The newest Call of Duty: Black Ops 4 Zombies map, Ancient Evil, is now available on PlayStation 4—and many players are trying to learn the map as quickly as possible.

One of the most important elements of any Zombies map is the Pack-a-Punch machine, which allows you to upgrade your weapons and make them stronger.

It’s actually not too difficult to unlock the Pack-a-Punch on this map—but there are several steps that you’ll need to follow.

Head to the Amphitheater to activate the Sentinel Artifact. A ritual will begin and you’ll need to kill several zombies. Once you complete the ritual, the Sentinel Artifact will disappear, indicating that you can move on to the next step.

Next, you need to find a Golden Bridle sitting on top of a small white pillar in two locations—it’ll either be in the Intersection of Treasuries or Stoa of the Athenians. Pick it up and you’ll start a boss fight.

After killing the boss zombie, head to the Spartan Monument where you’ll need to ride the Pegasus. You’ll enter a brief cutscene and the winged steed will take you to the River of Sorrow.

Once you’ve done this, you’ll need to free two eagles in separate cages—one is in Python Path, and the other is in Cliff Ruins. Shoot the cage to knock it down and then use your Specialist Weapon to open the cage and free the birds.

Now, all you have to do is head to the Center of the World. Another ritual will begin where you’ll need to kill more zombies—but once you’re done, the Pack-a-Punch machine will appear in this area and you’ll be free to upgrade your weapons for the rest of that game.