I absolutely love this game!! the visuals are incredible, so is the music and SFX choice. The gameplay was very fun, but simple enough to learn quickly. My only suggestions are
1. Add more punchiness (like effects when you land/take a hit)
2. Maybe you could use directional arrows to tell what key to press instead of the letters, making it easier for people who dont normally use WASD controls.
Other than that, fantastic entry! (You're getting a good rating from me :D)