Thanks for the feedback, much appreciated !
Yep, "escape bar", forgot about that. Even with a good grasp of English language I always make localization errors with keyboard inputs :p
That's also why I used arrow keys instead of WASD, that way you don't have to change from qwerty to azerty when launching the game ;)
Introducing the skills one by one is a great way to distillate tutorials into the first levels, I completely agree !
Thanks again to have taken the time to play my game and provide such good feedback !