In Halo 4, you will unlock Armor Abilities at rank SR-3 in Multiplayer, and it costs 3 SP to purchase.
Once you have unlocked and purchased Armor Abilities, you’ll be able to unlock and use these different abilities in your loadouts.
Active Camoflage – Camo cloak that makes you harder to detect – Unlocked by default, costs 3 SP
Autosentry – A placeable auto-firing sentry gun – Unlocked at rank SR-16, costs 3 SP
Hardlight Shield – Hard light barrier that stops most small arms and explosives – Unlocked by default, costs 3 SP
Hologram – Creates a holographic decoy of you to fool your enemies – Unlocked by default, costs 3 SP
Jet Pack – Allows limited verticial lift – Unlocked by default, costs 3 SP
Promethean Vision – Allows enemy detection through walls and other surfaces – Unlocked at rank SR-1, no SP cost
Regeneration Field – Creates and energy field that heals nearby Spartans – Unlocked at rank SR-16, costs 3 SP
Thruster Pack – Supplies a short burst of speed – Unlocked at rank SR-1, no SP cost
