Thanks for your reply.
Changing the controls helped, but it's still too much :P
I recommend automating some stuff, like:
if there's not reason to NOT grind, make sure player grinds automatically.
Make shots either never miss the target, to to keep shooting all the time, without pressing the key, or, at least, allow the player to hold the shooting button.
Ideally, speed up and down would also be automatic, but this might change too much the game