To execute a forward combo, press W to move forward when starting a series of attacks. This is most effective when facing a single opponent.
To execute a left/right combo, press A or D to move left or right when you start a series of attacks. This is effective against multiple opponents.
To execute a chop combo, press S to move back when starting a series of attacks.
Backflip - Away and Jump.
Leap Sideways - Press Left or Right and Space.
Forward Roll - Click Forward two times.
Side Roll - Click Left or Right two times.