Resident Evil 4

Leon travels to an undisclosed village in Spain where he encounters a huge contingent of unruly villagers who pledge their lives to Los Iluminados, the cult that perpetuated Ashley's kidnapping. He meets Luis Sera, a former Los Iluminados researcher, who aids Leon on his mission. By examining Sera's notes, Leon discovers that Los Iluminados gained control of their subjects by implanting a mind-controlling parasite known as "Las Plagas" into their bodies. Unfortunately, Leon and Luis are captured, during which time Leon is injected with the parasite. After escaping and meeting a mysterious man only known as the Merchant, who supplies Leon with ordnance and weaponry, Leon returns to his objective. He travels across a lake where he faces a large and dangerous creature.