It's an interesting concept, but the game seems a bit too easy at the moment. The attacks all seem to do a similar amount, and especially without sound effects, it just feels like you're clicking on a button to win, rather than playing an actual game. If you were to add more visual effects to spice up the gameplay, differences between the attacks (aside from "this one does 16 damage, this one does 17 damage"), and just a bit more game to the game (heavy vs light attacks that use up different amounts of stamina? something along those lines, just a bit more for the player to worry about besides hitting the basic attack button), then this could be a game that's a bit more fun to play.
However, I'm not familiar with games like this, so maybe I'm just not used to how they work.