When you have reached a level where you lead Marines or Covenant you'll be able to perform this sneaky little trick which should keep you alive a little bit longer. If you've got powerful weapons which are low on ammunition or power give them to the A.I. That follows as they'll never run out and they are more than competent with them.

In an open battlefield dual wield for maximum fire power as throwing Fragmentation Grenades will be a waste of time. If you are in an enclosed environment it is more effective to hold only one weapon which will allow you to use your free arm to detonate Fragmentation Grenades to deadly effect. The following are weapons that you will be able to dual wield:

Human Dual Weilding weapons

Magnum (Pistol) -
Sidearm which is deadly at close range particularly on head shots

SMG (Sub Machine Gun) -
Inaccurate but deadly, best used in small controlled bursts.

Battle Rifle -
Versatile weapon that can be used as a semi-automatic for close range or as a sniper rifle for long range.


Covenant Dual Weilding weapons

Plasma pistol -
Energy weapon that has two modes (manual rapid-shot and a powerful overcharged bolt of plasma) cannot be reloaded so must be discarded once spent.

Covenant Plasma Rifle -
Engergy weapon that causes its enemies to 'freeze' rendering them unable to return fire accurately, this weapon has to be discarded after use as it cannot be reloaded.

Needler -
Fires a rapid stream of small deadly needles that track their target and explode on contact. Unlike most Covenant weapons the Needler can be reloaded.

Note: By dual wielding it will take longer to reload and you will not be able to Melee attack.


All Weapons and their capabilities:

Human

Magnum (pistol) -
Dual Weild, Head Shot

SMG (Sub Machine Gun) -
Dual Weild

Battle Rifle -
Dual Weild, Zoom Once

Shotgun -
Splash Damage

Sniper Rifle -
Head Shot, Zoom Twice

Rocket Launcher -
Can Lock on, Splash Damage


Covenant

Plasma Pistol -
Dual Weild, Uses a Battery (non reloadable)

Plasma Rifle -
Dual Weild, Uses a Battery (non reloadable)

Beam Rifle -
Zoom Twice, Head Shot, Uses a Battery (non reloadable)

Covenent Carbine -
Zoom Twice

Brute shot -
Splash Damage

Needler -
Dual Weild, Can Lock on

Fuel rod cannon -
Splash Damage, Single Player only

Energy Sword -
Can Lock on


Vehicles available:

Human

M12 LRV Warthog
Yellow Civilian Hog
Pelican
Scorpion Tank


Covenent

Banshee
Covenant Drop Pod
Ghost
Phantom
Shadow
Wraith