There is a headlamp that the character uses but obviously isnt on the character to help with identifying things. Is there a button to turn that off? I like the total darkness immersion going on. Emersion? Imersion? English hard.
The default character light is a design choice (imo) so the player is never completely lost even without a flashlight/torch on a gun.
There’s no key/button to disable it.
Some (temporary) mission conditions like power disruption will make levels significantly darker in most areas.