Around 37 minutes to beat. Very shitty, unresponsive fighting game, where moves dont respond sometimes for several seconds of mashing. With shitty games like this AI exploitation is critical. I found that Volcana's trip kick really destroys the AI in this game, but took some time to discover what worked. Try to stay mid range from the enemy, spam trip kicks with Volcana, only approach enemies with a jump kick, trip kick combo then jump away. Let the opponents approach you from about mid range and spam trip kicks most of the time. That works until the final boss. For final boss I used the larger character and jump kicked , did a punch combo, then jump back out, jump kick in again and repeat the punch combo, etc.
Game froze on me and thought I was going to have to start over, but it recovered. From that point on I saved after each fight.