Phantom Breaker

Cause the online is pretty much dead you’ll be stuck boosting for this achievement, when making a match set the round to 1 then choose Itsuki and hold the left thumb stick to which ever direction your opponent is at and just spam the A button you should beat the match in 15-20 seconds

If anyone needs help with the online achievements let me know and I'll help you and don't worry I plan to keep my copy til it stops working