Reimu's attacks mostly consist of small projectiles in large swarms. Her Persuasion Needles will be fired when she's moving around on the ground, just jump over them. When she jumps, she may fire off a large group of paper amulets in circular swarms. On the ground and standing still she'll shoot a group of amulets that will flatten out and snake towards you require good timing to jump over them. As you cause damage to her, she will summon large, red yin-yang orbs that bounce on the ground.