Solid Game
Unfortunaetly not a stellar performance.
The music became repeditive, and the attack animations had to many frames. (Common mistake, don't feel bad) I would suggest cutting them back...(unless the problem was slow down on my end)...To about 3 or 4 frames. I would have liked more buttons to perform attacks with. I set mine to Z and Shift for my personal best results but having A be left punch, S be right punch, Z be left kick, X be right kick, and shift be jump, you would have made for a much deeper game play. This would have allowed you to perform better combos. (I know, you would then have to make more animations, but truly great flashes sometimes take literaly months to complete)
Some simple combo ideas for version 2:
X or Z + Shift = Jump kick
Left or right, down + Z or X = Spinning sweep
Down (hold) + Shift, shift, shift... = Charge (for more pwerful attacks)
Up + Z or X = High kick (A or S for High punch)
Down + Z or X = Crouching kick (A or S for Crouching punch)
Of course there are hundreds of combonations, but adding just those moves would seriously make this game stellar! :)
I hope my suggestions don't offend you.