multiplayer, Halo 2, campaign mode, sci-fi armor, futuristic weapons, dual-wielding, first-person shooter perspective, alien environment, space marines, Covenant enemies, energy sword, plasma rifle, battle rifle, grenade throwing, team strategy, cooperative gameplay, intense firefights, shield recharge, health bar, HUD interface, respawn system, online gaming, voice communication, competitive, dynamic lighting, high-resolution textures, 3D models, action-packed, Xbox console, split-screen option, immersive sound effects, orchestrated soundtrack, multiplayer map, control point capture, Slayer mode, Capture the Flag, high jump, fast-paced, power-ups, overshield, active camouflage.