Phantom Breaker: Omnia

A Slip Shift can only be performed in Quick Style. It is performed by pressing Forward right as an opponent's attack would hit you. If performed correctly your character will do a sway animation and flash red avoiding the attack.

I did this in vs mode. I just did it against the computer because you do not need to win the round just perform the Slip Shift 5 times. You can get away with mashing forward near the opponent.

You can also do this with 2 controllers or even boosted with a partner online.