Hey, first of all; this game is overall great. It has stunning visuals, gets the atmosphere right and has a more than solid gameplay (even though the enemy movement makes it hard to aim at them). I have two suggestions for improvement: First, the camera movement has a very low sensitivity, which makes aiming and looking around in general quite hard and second is the darkness. I can see that it was added for the atmosphere, but most of the time I only noticed the enemy, when it was already hitting me, because I couldn't see further than 5 meters.
Overall a 9/10. Would love to see more games from you!