the graphics are nice, but the game has a serious lag (eating both processor and graphics card while the game runs very slowly) this makes the game hard to play (I noticed that the lag disappears when I stop moving, so it could either be your camera codes or something in your cloud animation code (alternatively, you could also try putting the floors in different rooms or scenes to reduce lag)
I really liked the bodies in the top floor, although i can't understand why would a hospital hang up people XD
The music is nice, but you forgot to make it loop, so you should remember to make loop = true, or whatever is the equivalent in your coding language or program
You should add more description about your game and how to play it and how it relates to the game theme. Also, not everyone can speak French ^_^" so maybe you could add a translation to your itch.io description
Also, you should rate other people games, because this helps you get more views (and thus more ratings) in your game ^_^
All in all, really nice idea and graphics, but the execution requires a lot of improvements But, good job and hopefully you can avoid these problems in your next game :)