Instructions
Select "Item" and then "Libra." Snow will use the Libra to ascertain the Shiva Sisters' weakness, which is defense.
Choose "Paradigm Shift" and then "Sentinel." This causes Snow to change his stance to the defensive, where he can use maneuvers like "Steel Guard."
Select "Steel Guard" every turn. This causes Snow to defend. After several turns of this, Snow's Gestalt Drive becomes active.
Press the "Square" button on the controller to trigger Snow's Gestalt Drive. This ends the battle.