This game could still be great.
Interesting idea with the 4 choices. Each one works well with the other and requires some strategy to use correctly. The biggest problem was my "monk" missed close to 50% of the time. Which is ridiculous since after every 2 attacks I have to spend 2 turns reviving Energy and then Health... So after 8 turns I have hit the enemy ONCE on average... This should be fixed. Either have more energy or have some way to raise the hit % very soon into the game.
Also, the proceed button was really annoying. Having to move the mouse away from the fight buttons EVERY time to click proceed TWICE per round... Why not just have it automatically go to the next player with a 1 second delay or something.
It's too bad because the art, animation, sounds, idea, icons, EVERYTHING else is great. 5/5 on that. Unfortunately the above problems really drag the enjoyment down to a 3/5 level.
Hopefully you improve this game or make a new one with the same idea. Maybe make a backstory for the characters and a better fight selection menu. Maybe a town with upgrade shops or something.