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How to get kills with toxic damage in MW3 Zombies

Toxic damage kills!

Completing camo challenges is one of the most fun aspects of the Modern Warfare 3 Zombies grind. To unlock certain weapon camos, you'll have to get kills with toxic damage, which can be done pretty easily if you have one required item.

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How to get toxic damage kills in MW3 Zombies

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For this camo unlock, you need to acquire the Brain Rot Ammo Mod power-up, which you can see above. Use this item while holding the weapon you have to complete the challenge for and start mowing down zombies. The Rival-9 and Striker 9 SMGs ask you to get 250 kills with toxic damage. I tried using the Experimental Gas tactical for this challenge, but it didn't work.

Related: How to get kills with frost damage in MW3 Zombies

Where to find Brain Rot Ammo Mod in MWZ (Map)

Image by Pro Game Guides

To get your hands on the Brain Rot Ammo Mod, you can search every house and building for Aether Caches, as these are the only containers where I've found this item. A more efficient way is to clear out Aether Nests and Infested Strongholds across the map as these places have guaranteed Aether Cache spawns.

Brain Rot Ammo Mod is a very useful power-up I prefer using on my weapons whenever I find it. With its toxic damage, it has a chance of converting the zombie you're shooting at into your ally; the turned creature then goes on a killing spree, taking out a few zombies nearby before exploding. This ammo mod really shines when you manage to turn a special or elite zombie. Luckily, I was able to infect a Disciple in the Medium Threat Zone and it took out an entire horde of zombies for me.

Stay tuned to Pro Game Guides for more Call of Duty: Modern Warfare 3 content. In the meantime, head over to our article on MW3 Zombies Minelayer Mission Walkthrough.

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Praharsh Kashyap
Praharsh Kashyap is a video gaming enthusiast from India currently working as a Contributing Writer at Pro Game Guides. He has been playing and covering first-person shooters such as Call of Duty, Battlefield, and Apex Legends for years now. Besides FPS games, he also likes to indulge in RPGs every now and then.

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How to get kills with toxic damage in MW3 Zombies

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