Everything looks good, except it's way too dark. Unless this is a survival horror. If your game is going to be this dark, an alien better come up from behind and rip my entrails out at a moment's notice.
This level is dark on purpose, probably not the best for a screen actually. : )
The lighting is from their own "flashlights" and the darkness is the main theme of that floor (there's a section where you have to follow a moving light, etc.)