This game has a lot going on and does some interesting things, I enjoy the idea of what this game will become with more time spent on some mechanics. I think the music was made from scratch which is really nice if true since making music to me is quite difficult to get right.
The difficulty went from I can walk through everything to not being able to walk through anything or plan due to the randomness of the last couple of stages, and unfortunately I feel when having to redo some stages over and over again is where the music becomes a key component on keeping your player from being frustrated. In small doses the short music track repeating was fine but when played over and over again I had to mute it.
The artwork was really nice for a top down stealth and think it fit perfectly for the theme I really enjoyed the little character designs and would love to see each character design have different strengths or movement speeds.
I did notice that the stealth meter (eyeball icon) did not cooldown and so progress was lost even when you felt you were safe due to the complexity the walls and lights ect. I think in this situation Raycasts would of been a really cool thing to use here to avoid the issue of light detecting you through walls.
Keep up the great work I cant wait to see more from you in the future :)