I really like the art style, it reminds me of a Psychonauts level.
The game really needs to explain how combat works, as I'm still not sure what's going on and how I managed to win sometimes. I didn't seem like protect did anything half the time, and "soins" never seemed to do anything. There's also very little difference between when a button can be pressed and when it can't, so it's hard to tell when I can do something. It could also really use some sounds or some music.
I did manage to beat it, though I'm not really sure how, as even though I had a strategy, it still felt like I was just pushing buttons randomly.