A Full-Force Burst is often a symbol of a character flexing with an energy beam behind it on the icon itself. Using this, your character's combo speed and strength will be increased and can be amplified further with the right combinations of skills. While in this empowered state, fell a total of 10,000 enemies, which can be tracked on the pre-battle screen under Results. The first page will actually show you the number of enemies you've slain while in this state, so if it is still rather low, aim to clear waves of enemies in Full-Force Burst while aiming for S ranks.