Continue the story of Marcus Fenix as he leads Delta Squad on a series of perilous and adrenaline-pumping missions; Combines stunning high-definition visuals with an engaging story of survival, loss, and retribution; New characters, more weapons, nastier enemies, bigger vehicles, and grander locales offer more action, emotion, and thrills; Features new weapon-specific executions, chainsaw duels, and shocking boss fights; Raises the graphics bar for next-generation games through its breathtaking visual effects, made possible through Unreal Engine 3; New visual effects include ambient occlusion, dynamic shadows, improved character lighting, and more; Includes advanced destructible environments, new weather effects, and the introduction of fluid objects