Upgrading your weapons in zombies is essential to winning in COD: Black Ops Cold War. This guide will assist players on how to upgrade weapons during their match. The zombie mode has been revamped with valuable changes to make the experience fresh. For starters, instead of an endless match, players can choose to go for 20 rounds instead. While the endless match is still available, players can complete a match unlike ever before. Teaming up with 4 friends to take on hordes of zombies comes along with tons of weapons and perks that players need to find. Here's how players can upgrade your weapons in COD: Black Ops Cold War zombies.

Related: CoD: Black Ops Cold War Season 1 Cosmetics Leak Online

The zombie mode has been a common trend in every Treyarch produced Call of Duty title. Other entries like Call of Duty World at War and Call of Duty Black Ops featured a hidden story under the gameplay. Easter eggs are hidden all around the level that tells the story of a mad scientist trying his best to bring back his deceased daughter. In Call of Duty: Black Ops Cold War, no new characters are introduced as the player controls a generic soldier character. The change is unknown but the gameplay remains the same, survive. Here's how players can upgrade their weapons in Black Ops Cold War.

How To Upgrade Your Weapons in COD: Black Ops Cold War Zombies

A soldier aims his gun in a dense forest in Call of Duty: Cold War

Players will need to get deeper into the level to find the Pack-A-Punch machine and rebuild it before players can use it. Here's what players need to do to find it.

  • Turn on the power in the level. Grind enough money by killing zombies to remove the barricades to find the power switch.
  • Activate the Terminals in the Partical Accelerator Room. There are two of them the player needs to activate.
  • The Aether Portal will appear. Head inside of it.
  • There will be marker on the map so head over to the Weapons Lab. There will be a machine part here.
  • Head to the Particle Accelerator Room and use the machine part to repair the machine.
  • Claim your Pack-A-Punch

The Pack-A-Punch will cost 5000 points for the first upgrade, 15,000 for the second, and 30,000 for the final upgrade. This will make weapons more powerful and allow players to get more ammo.

Call of Duty: Black Ops Cold War is one of the better COD titles to release in years. Not only is it the first in the new generation, but it also allows players to do crossplay and cross-generational play, allowing for the biggest pool of players yet. Xbox, PlayStation, and PC players can all come together in a single lobby. Hopefully, more titles will push this feature moving forward.

More: How to Unlock Operator Woods in Call of Duty: Black Ops Cold War

Call of Duty: Black Ops Cold War is available now on PlayStation 5, PlayStation 4, Xbox Series X, Xbox One, and PC.