You've done amazingly well.
My only real complaints relate to gameplay. The pistol is a bit of a mood killer in between the sobbing children and the ambient noises; something more suitable and underpowered would be nice, or even nothing at all and relying on stealth. Under-powering the player; such as taking away her speed, would also help with the atmosphere.It doesn't seem too scary at the moment because you're armoured, have a space age gun and moving at a speed not seen since jesse owen.
On technical terms, the only thing I noticed was some colourful fuzz at the bottom of the screen. Oh, and maybe the resolution.
Other than that. Well done, that is some damn fine developing you've done there; keep us posted. P.s. I might come back with more comments.