Like others have said, It was a bit hard to control the view because of the mouse going off screen, but this may just a browser issue. However the game itself seemed excellent. The art style was executed flawlessly, and the general stealth mechanics seemed to work. I actually found it quite difficult myself.
I do feel like there could be a bit more polish on the detection, since it felt a bit inconsistent when the enemies actually found me or not. They would sometimes lose me in the light, and then sometimes find me in the dark.
A lot of potential here in this game, and I encourage you to continue to work on it in the future, great job!