To truly excel in Persona 4 Arena Ultimax, you need to go beyond basic combos. Master techniques like One More! Cancel (A+B during a combo to cancel into another attack at the cost of SP), One More! Burst (A+C+D during a combo to extend it at the cost of Burst), and Roman Cancel (A+B+C during an attack to cancel its recovery at the cost of SP). These mechanics allow for extended combos, mix-ups, and defensive options. Learn to utilize Instant Air Dash (IAD) for quick overheads and cross-ups. Practice Fuzzy Guard to defend against high/low mix-ups more effectively. Understanding frame data for your character's moves and your opponent's moves is also crucial for identifying safe pressure and punish opportunities. Spend time in Training Mode experimenting with these techniques.
