Thanks for your feedback!
All music and sound effects will be optimized at some point in the future, such as walking sound, etc.
Did you play the latest version(0.611h) or the older one? The new one has speed up the moving speed a bit, actually the speed of the character I will keep an eye on it, until it becomes satisfactory.
Health item: I will optimize each difficulty in the future when the demons and levels reached a certain amount to make it more balance.
Thanks again buddy!