This can be done in Offline Vs Mode with 2 Controllers or VS COM.
The easiest method for this achievement, and any other Roman Cancel achievement, is to assign Roman Cancel to a controller button (I chose
).
For this achievement, whenever you get half a Tension Gauge, you need to Roman Cancel
, then IMMEDIATELY input the command for a special move. I've been using Ky Kiske, so I've been hitting
then immediately
+
(236+S) to fire his projectile. This should result in you flashing blue,
but not posing, and going directly into your projectile.
This should be doable during 1 match (5 rounds to win with infinite time). I'm sure there are a ton of ways to build tension, but against the CPU, i've been holding dash forward for as long as i can, then just mashing out special moves until the CPU has low health. Then i keep dashing forward and taking damage until my health is low (builds tension as well).