This red heart beating in agony, because he is so lacking droplets of blood. Rather go for the drops to your character, and then continued to operate. Jump as high as possible, more and more agile to get the red droplets located in the most inconspicuous places underground labyrinth. As soon gather up the appropriate number of drops, to open secret doors that will translate your character to the next floor of the maze. Just do a prick of spikes, they take away from the heart energy.