I love the visuals and the audio bringing a real nice and dark atmosphere into the world. Some areas, like hallways, are a little claustrophobic (if that makes sense) but it does pay off well.
I think my favorite part was the introduction to the explosive barrels at level three, and that one scene where I could use it against the enemies.
I have a few complaints though:
I kind of wish there was a new enemy type that was introduced later in the game. Because fighting the same ones for all three levels was a bit tiring.
The lack of an ability to use the gun and flashlight at the same time was a bit disappointing. There were at least two encounters where I wish I could really do that.
Overall, I did enjoy it.