This trick makes level clearing relatively easy until at least the 4th Dan. 
First, get close to your opponent, then push left joystick up and right 
joystick down to do a forward flip to get behind your opponent. Then you can
do a back kick, or back jumping kick and get him almost all the time before 
he has a chance to turn around and do a move on you. On the 4th Dan, he's 
fast enough to start making moves before you can.