Single hits had advantages as well as the multi hits do.The ability to use a single energy point to level up or beat a boss instead of five has some obvious advantages such as.....using those points instead of wasting them. There has been a lot of feedback on this issue, adding both multi hits and single hit button is a solution for all I think. Thanks for a great game, and thanks for listening to our feedback.
i.e. If a player has 5 energy and a boss' health is at 11. The player would choose to spend 1 energy to beat the boss, and use the other 4 to fight. There are many situations in which a player would not choose to use 5 energy or stamina on hitting, as it is advantageous to use only 1.