So, I know i'm kinda late to the party here, but this game is utterly horrible.
The enemy AI is impossible. They are crack shots at insane distances in the pitch black darkness. You get shot behind solid cover all the time.
Stealth is non existant on this game.
Theres no way to figure out where your even getting hit from most of the time. I have to search for enemys that are shooting me that i cant even figure out where they are.
The aiming on x-box is just horrid.
You cant see a damn thing. Everything is wayyyy too dark and when you get shot, which is every 5 seconds, you have even worse vision.
The vision with the gas mask on is shitty when you start running out of filters. And the filters go wayyy too quick.
The night vision is usless. Not to mention you get about 10 seconds of battery any time you use it.
You have no fucking ammo and what little you have is spent trying to shoot guys that you cant see and cant find.
Alot of you guys talk about this game like its good. Now, its really pretty, and i love the premise of limited supplys and the overall feel of the game, but the game play itself is so difficult because you cant ever see anything and the AI is over the top good, it makes this a broken game.
I had exactly the issues youre talking about, except I didn't.
Have you considered turning up the brightness? It's definitely dark, but not unplayably so if configured like the utility in the game. Gasmasks were tough but I always managed.