video game, Resident Evil 4, ranking system, player character, Leon S. Kennedy, action pose, aiming gun, tactical gear, combat knife, survival horror, zombies, Ganados, boss creatures, castle environment, dark atmosphere, eerie lighting, over-the-shoulder camera, high tension, detailed textures, gritty aesthetic, score-based evaluation, time completion, accuracy, health management, resource conservation, unlockables, secret weapons, Ada Wong, special agent, bonus points, speedrun, professional difficulty, immersive sound design, dynamic shadows, 3D models, intense gameplay, leaderboard, competitive, S rank, A rank, B rank, strategy, adaptive AI, game mechanics.