regenerator, Resident Evil 4 Remake, horror creature, parasitic mutation, pale skin, spine-chilling, slow movement, intimidating presence, vulnerable to infrared scope, combat action, aiming, shooting at plagas, intense atmosphere, dark corridors, eerie lighting, survival horror, in-game strategy, Leon Kennedy, tactical reload, high tension, close-up shot, over-the-shoulder view, detailed textures, realistic materials, immersive sound effects, video game environment.