Halo 2 (NT)

Barely a year after John-117 destroyed Halo and seemingly it's monitor, 343 Gulity Spark, humanity is finally ready to spent sometime saluting that they are victorious. However, a newly condecorated Master Chief Petty Officer John-117 and his A.I. companion Cortana had to begin a new fight against the Covenant for the loss of one of their sacred rings. Meanwhile, Supreme Commander Thel 'Vadamee has little to do about his damnation for the loss of Installation 04, however, the Hierarchs decided to give the Sangheili a new chance, by transforming him into the Arbiter, the greatest warrior the Empire has ever seen.

Campaign
The campaign consists of 17 levels, 15 of which are playable:
 * 1) Introduction (non-campaign mission)
 * 2) Mark IV (tutorial mission)
 * 3) Stationized — Destroy the Covenant invaders;put an end to the battle in orbit.
 * 4) In Your Own — Regroup with Marines in Old Mombasa and head to the bridge leading to New Mombasa.
 * 5) New Mombasa — Defend New Mombasa from Regret's fleet.
 * 6) Thel 'Vadamee — Locate and pursue the Heretics and their leader, Sesa 'Refumee.
 * 7) Lab — Pursue and kill Sesa 'Refumee, alongside some Flood on your way.
 * 8) Installation 05 — Venture through the Forerunner ruins to reach the towers at the lake.
 * 9) Temple — Reach the top structure and slain the Prophet of Regret.
 * 10) Holy Site — Rescue Covenant allies, lower the Containment Shield, kill the Flood and the Humans;rendezvous with fellow Sangheili in the encampment.
 * 11) War Zone — Manage to get through both Human and Flood controlled war zone to reach the Library and retrieve the Sacred Icon.
 * 12) Revelations — Rescue Human allies and pursue the Prophets of Truth and Mercy.
 * 13) The Great Schism — Take revenge upon the Jiralhanae traitors alongside opposes and reach the canyon floor.
 * 14) Venturer — Stop Truth from reaching the Forerunner Dreadnought, kill every Brute and Flood in you way.
 * 15) The Covenant — Stop Tartarus from activating Halo by making an unexpected alliance.
 * 16) John-117 — Move to the river for evacuation alongside you new ally;find and rescue Johnson.
 * 17) Spartan Ops — Defend the Base from incoming Covenant troops by arming a bomb and escape the base.
 * 18) Driving Through — Lead Marines away from the Nest and reach the city of Voi.
 * 19) The Last Stand — Destroy all Covenant anti-air threats;stop Truth from activating the Ark.

Features
Halo 2 alternates as the player character; Master Chief Petty Officer John-117 and the Arbiter Thel 'Vadam. Most missions are played as John-117, although there are seven levels where you can play as the Arbiter, changing fully the perspective of the game until The Covenant.

While the HUD and size differs, the experience of playing as a Elite (Sangheili) is similar to that of SPARTAN, with stamina and health limit. MJOLNIR Mark V armor is used by John, which grant him shields. The Arbiter possesses those features, but also an exclusive one called the Active Camouflage, which can turn him invisible by an unlimited time (though the player will be weaker while using the cammo). However, the player always has a medical kit which includes 3 canisters of biofoam that can be used at any time during the game (as John-117) and an Covenant health-like apparel that can increase the player's life bar (as Thel 'Vadam). Health packs are also located in various parts of the level, although they are more scarce in case of the Arbiter.

The players' experience can increase by passing through levels and doing specifics sub-missions in campaign (some are hidden, while others not). This feature can be used for upgrading and giving orders to AI teammates.

In addition to the new features, the game also features new weapons, such as the Plasma Carbine, Needle Rifle and several Jiralhanae (Brute) weapons (Brute Shot, Brute Plasma Rifle, Spiker, Mauler and the Energy-Sword equal-like Gravity Hammer).

Spartan Abilities

 * Jetpack
 * Armor Lock
 * Super Energy Shield
 * Dodging

Elite Abilities

 * Active Camouflage
 * Dodging
 * Super Energy Shield
 * Energy Bubble

Main Characters

 * Master Chief Petty Officer John-117
 * Arbiter Thel 'Vadamee / Thel 'Vadam
 * Artificial Intelligence Cortana
 * Sergeant Major Avery Johnson
 * Commander Miranda Keyes
 * Fleet Admiral Lord Terrence Hood
 * Special Operations Commander Rtas 'Vadumee / Rtas 'Vadum
 * High Prophet of Truth
 * High Prophet of Mercy
 * High Prophet of Regret
 * Chieftain Tartarus
 * 343 Guilty Spark
 * Gravemind

Minor Characters

 * Heretic Leader Sesa 'Refumee
 * 2401 Penitent Tangent
 * Prophet of Objection
 * Sergeant Major Peter Stacker
 * Orbital Drop Shock Trooper O'Brien
 * Jubjub

Difficult Levels

 * Easy — Laugh as helpless victims flee in terror from their inevitable slaughter. The game basically plays itself.
 * Normal — Face firm resistance from competent, determined enemies, but burn through enough ammo and you will eventually triumph.
 * Heroic — Fight against formidable foes that will truly test your skill and wits; this is the way Halo is meant to be played.
 * Legendary — Tremble as teeming hordes of invincible enemies punish the slightest error with instant death... again and again.

UNSC

 * Sangheili (Elites)
 * Unggoy (Grunts)
 * Kig-Yar (Jackals)
 * T'Vaon (Skirmishers)
 * Mgalekgolo (Hunters)
 * Yanme'e (Drones)
 * Jiralhanae (Brutes)
 * Huragok (Engineers)
 * Flood
 * Flood Infection Forms
 * Flood Combat Forms
 * Flood Carrier Form
 * Human Combat Forms
 * Sangheili Combat Forms
 * Jiralhanae Combat Forms

Covenant

 * Humans
 * UNSC Marine Corps
 * Marines
 * Orbital Drop Shock Troopers
 * Pilots
 * Flood
 * Flood Infection Forms
 * Flood Carrier Forms
 * Flood Combat Forms
 * Human Combat Forms
 * Sangheili Combat Forms
 * Jiralhanae Combat Forms