If you want to give some general feedback, or suggest something, please do so here.
In regards to feedback, please try and be constructive. Saying "your game is too hard, dude!" doesn't help me in maybe making it easier to play. However, saying "It's hard for me to see sometimes what hit me and that is really frustrating." is much better, because here I can at least understand which area of the game makes it too hard to play.