Anyone who’s played a lot of zombies in the Call of Duty series knows how helpful Pack-A-Punches are. They instantly upgrade your weapon, making it much more powerful. That’s why they’re essential for lasting deep into Black Ops 7’s zombie mode.
However, getting a Pack-A-Punch can be costly, as the first upgrade requires spending 5,000 essence from the Pack-A-Punch machine. But, there’s a way to upgrade your weapon for free without using your essence. Here’s a full guide on how to do it.
Unlock and Equip Toxic Growth
The Toxic Growth field upgrade is key to getting a free Pack-A-Punch.
You need to reach level 29 to unlock it. After unlocking, make sure to add it to your loadout so you can use it when ready.
Get the Fumigator
On the Ashes of the Damned map, you’ll find various fumigators—small tanks with hoses attached. They can be found in multiple spots, like in the barn at Vandorn Farm near the power switch.
Approach and pick one up to use it.
Get the Free Pack-A-Punch
With the Toxic Growth upgrade and a fumigator in hand, you’re prepared to upgrade your weapon for free.
First, look for small green plants on the ground—these look like tiny green balls and are usually found in grassy areas around the farm.
Use the fumigator to interact with these plants. After interacting, activate the Toxic Growth on them.
This will cause the plant to grow quickly. When fully grown, the plant might sometimes spit out a Raw Aetherium Crystal. Gathering this crystal instantly grants your current weapon a Pack-A-Punch upgrade without spending any essence.
Note that collecting the crystal involves a bit of luck, so you might need to try several times to get one.
It’s best to start growing the plant at the beginning of a new round to avoid too many zombies attacking while you’re waiting.
