zombie firefighters seem immune to everything

[DeadJericho]

ive shot them with electric shotgun rounds - immune
hit their exposed head with acid, bleed or crit weapons or bullets - immune

i always have to just run from them because they wont die.

am i missing something here?

[Niliu]

They are immune. The rubber boots of a firesuit keep them from being electricuted, and the suit is rated for hotter flames than we can produce. Too thick to cut through, and acid can't eat through it.

I've never had an issue, but I exclusively use blunt weapons, so that could very well be it's weakness. Blunt to the head, always my go to.

I believe there's a codex of sorts in-game that reveals more about them as you kill them, giving you tips and whatnot.

[Drake Ravenwolf]

Easiest way to deal with them? Counter Attacks - they bypass immunities so you can damage them with fire/shock/acid weapons just fine as long as it is a counter attack.

That is when you "well time" a block and they get an F prompt on them

[Silver_KSA]

Target head and you will get them, still they are not easy to instant kill

[Mall Ninja]

I think bleed weapons kill them easily.
Just don't have any elemental damage applied to the weapon.
Also any grenades 1 shot them.

[Purple Monkey]

This is why the game has a Zombiepedia. You should read some of it.
There's a fireman zombie very early on in the game that teaches you about their immunities too.

[cuss]

Originally posted by Silver_KSA:

Target head and you will get them

Melee their head with a straight melee weapon. It can't be modded or they'll resist it.

[Rabid Urko]

Give em a good bashing with a crowbar.

[The Sandal Bomber ™©]

Peggy with a mutilator mod ♥♥♥♥♥ them up with a head shot but initial blunt weapons are very good go for the legs or an arm.