Immortal Soldiers

[Ceaseless Discharge]

The exosuit-wearing ones at the chemical plant and the ones that step in on STC Malachite...these guys need to go. Please.

[KuroCat]

aim for the head

[Ceaseless Discharge]

Originally posted by KuroCat:

aim for the head

Can confirm...doesn't work

[Broadsword]

There's some invincible dudes in different points. One of them by Yaniv, I think the dudes in the Duga guard towers are also invincible.

[BTGbullseye]

Some enemies are unkillable due to existing in areas where you will die from scripting. These areas are out of bounds until further along in the story, or if you pursue certain story choice paths.

[Entropic Mushroom]

Skill issue. /thread.

[DomEReapeR]

Originally posted by Broadsword:

There's some invincible dudes in different points. One of them by Yaniv, I think the dudes in the Duga guard towers are also invincible.

They aren't invinicible per se but they do have unacceptably crazy health, the chemical plant one mentioned by OP takes 25-30 headshots with armour piercing ammo and even more shotgun shells. They die, most people just aren't patient enough to pump that much ammo into them before assuming they're invincible.

[Spinoff]

I had the same problem. The guy in exo just didn't wanted to die when I headshot him from a distance, but when I sneaked up close it was 1 pistol shot to the head. weird