How to Get Toxic Damage Kills in MW3 Zombies

Damage that shall not be named
Toxic Damage MW3 Zombies
Screenshot by Prima Games.

Whether it’s for camo challenges or the main story missions, you will eventually need to get Toxic Damage Kills in Modern Warfare 3 Zombies. Unlike other damage types, Toxic is never really described by name in the menus, but I can easily help you get the right items.

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MW3 Zombies: How to Get Toxic Damage Kills

You can get Toxic Damage Kills by using the Brain Rot Ammo Mod on any of your weapons or by using the Experimental Gas tactical equipment. Overall, the best way to get these challenges out of the way is to use the ammo mod. Most of your shots will do passive Toxic Damage with Brain Rot, so you won’t need much effort.

Brain Rot Ammo MW3
Screenshot by Prima Games.

The only setback is actually finding an ammo mod. However, you can find a ton of them in Aether Caches around Urzikstan, or if you’re lucky enough, you can use the Schematic for the ammo type to craft a free one. Either way, the camo challenges will likely require you to have on the Brain Rot Ammo Mod for the kills to count.

Experimental Gas is the second method for getting Toxic Damage Kills in MW3 Zombies. Much like Tear Gas from Multiplayer, this tactical will spread a ton of gas in a condensed area that deals damage over time to zombies or mercenaries. I like to dish out small amounts of damage with my primary weapon and let the gas do the rest of the work.

Of course, you can always use both the Experimental Gas and the Brain Rot Ammo Mod if you want to rack up as many Toxic Damage Kills as you can. Head to an extraction, round up the zombies, and watch the toxic effect melt them away.

For another damage type, learn how you can get Cryo Freeze Ammo in MW3 Zombies.

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Author
Daniel Wenerowicz
Dan has been writing gaming guides, news, and features for three years after graduating with a BA in writing . You can find him covering Call of Duty for eternity, action-adventure games, and nearly any other major release.