Interesting style that makes it atmospheric. Like a combination of photoshop and graphics from some 90's 3d engine.
Pretty good for an indie, short film. You should upload it on Newgrounds.com.
Although, some sounds are too loud and noisy. Yes, to create a creepy atmosphere and horror-like style they should be noisy, but not in the way ears might bleed.
It's predictable. Two guys went to the fog- we know they will not come back. The pussy-acting-like one made few steps back from others- no way! something took him away.
It's been done many times before.
I'd give it 5/10.