Marguerite's second form is a grotesque, insectoid creature. She's highly agile and can climb walls, spitting insects and acid. The Burner (flamethrower) is incredibly effective against her and her insect swarms. When she's on the ground, use the Shotgun on her glowing abdomen. Keep moving to avoid her lunges and acid attacks. If she retreats into a hole, be ready for her to reappear from another. The Grenade Launcher with Flame Rounds is also very potent.
