Equipment

Active Camouflage

Active Camouflage provides you with a light-bending cloaking device. When you activate cloaking, you'll have 20 seconds or so of near-invisibility. In the campaign, enemies won't react to your presence, but a faint Predator effect will still be present in multiplayer. Firing a weapon will partially reduce the amount of invisibility that you possess.

It also has a built in radar jammer, concealing you from the enemy's radar. However, to balance out the camo ability, your own radar also becomes jammed and audio will be great hampered. You'll need to be extra perceptive when opting for this armor ability.

Armor Lock

Armor Lock will temporarily make you invincible, allowing you to withstand any enemy assualt. After the lock is released, an EMP wave will fire, removing any grenades stuck to you and pushing back nearby foes. To counter the lock's defensive advantage, you will become immobile while in this state.

Armor lock is best used when supported by a squad of allies. You can provide a quick distraction, drawing enemy fire away from your comrades, or rely on the EMP burst to push back enemies. It is far less practical when attacking solo.

Drop Shield

The Drop Shield serves as a large barrier that will block or deflect nearly every projectile. It however can be penetrated by enemies simply walking into the bubble itself. Allied forces in the drop shield's bubble will regenerate health while inside.

The Drop Shield is great for stopping long distance enemies, such as snipers, or quickly healing wounds. It is much less practical during a close range firefight, as enemies can simply walk passed the barrier.

Evade

Evade allows you to quickly avoid an enemy assault or quickly roll. This ability is great for breaking an enemy's tracking or lock on, and also getting the drop on your foe.

The Evade armor upgrade is not available during the campaign, as it is an Elite exclusive. However, during multiplayer, it is under free use for Spartans.

Hologram

The Hologram produces a copy of yourself that will run in a straight line. After the Hologram suffers enough damage, or your energy meter depletes, it will shut down and disappear.

Hologram is great fro the campaign, as it will distract any foes, leaving you free to follow up with a surprise attack. It has much more limited uses in multiplayer, where human players will either catch on to the distraction after a few shots, or ignore the decoy all together.

Jet Pack

The Jet Pack will enable you to fly over long distances or quickly make short bursts. It's a great ability for evading powerful attacks or getting a height advantage against your enemy.

There are many parts of the campaign that will require manning a jet pack, from crossing barriers to navigating structures.

Sprint

Sprint allow you to move at increased speeds, however during so you will be unable to fire. It's best used to either quickly enter the battlefield, or quickly escape to cover. It has limited use as an actual combat strategy.