Very cool and enjoyable stealth/hitman game.
I found the whole concept very original. Very nice art style and aesthetic. The music fits very well with the graphics. The randomly generated levels were a nice touch too that helped keep it fresh.
One way I think you could improve it is some targets are quite hard to spot e.g. I had a blue Rabbit wearing blue as a target, and I saw a Rabbit that was kind of greyish-blue wearing blue, and was not sure if it was the target or not. You could also add some visual to indicate whether the guests can see you or not.
Overall, a strong submission. Well done!