I really click with these controls, the deliberate. slow movement of the player character as well as movement relative to the look direction. I personally attempted something similar to your vision cone system in my own project though I believe yours came out quite clean, especially with the way shadows are rendered. The vision focusing when you aim is a nice touch as well.
A fine job, I could see a future version of this with more interesting variety and its action made a little more visceral and responsive really working out!