I made this quick, and easy, demonstration vid on how to beat the last, and hardest, fight of Score Attack Mode: Unlimited Ragna. For achievement hunters mostly. It abuses the really predictable AI and Ice Carz Spamz. Have fun, and let me know how you do.
Freeze/or knockdown(Ice Carz), whichever > [dash > Throw Counter on recovery > wait until he falls almost level while frozen > Ice Carz >… ]