Find a strong afterimage trainer image online (search for "opponent color spiral" or "afterimage fixation target"). A bulls-eye target with a red center and green border works best for beginners.
Renee, the protagonist, relies on stamina for dodging and mana for casting spells. Running out of stamina at the wrong moment usually results in a quick death. Trainers allow you to spam the strongest spells and dodge infinitely, breaking the resource management aspect of the game. afterimage trainer