Thank you so much :D
I definitely agree I overturned the difficulty a little, oops! There wasn't much time for play testing! I played around a little with making the hero walk on the right side of the screen, but it became very easy and you couldn't see where he was shooting most of the time - so I thought it better to almost force you to walk infront / around. It seems I should have compensated for the increased difficulty of that with faster movement and mouse controls :)