Oh I adore the look in this! Like the parallax backgrounds, the light effects and the pixel art just goes perfectly together here. I mean I was already taken by the beginning cutscene, but the rest kept up nicely. Love it.
Not to diminish other aspects of the game too. The controls are smooth and nice, the atmosphere was really fitting and the story setup in the cutscene was well executed, genuinely good body horror is always a plus! I played the web version, so if the downloadable is longer do tell, but I really hope you continue developing this further ^^ The game play loop is good and with some twist and variations you could continue the sneak mechanics a long way. Also the story was intriguing of course.
But nevertheless, great work! :D