Wow, its a very nice concept, kinda reminds me of Final Fantasy Tactics, even tho its not turn based.
But It needs a lot of polishing. First of all, the controls are irresponsive, and the fact that taking damage reduces your action charge makes it even worse.
Second, it needs a better control scheme, mouse only starts hurting your finger after a while playing, i know you did it for a reason, but i think you need to come up with something better for more enjoyment of the game.