Halo: First Strike

Humanity has beaten the deadly Covenant in the race to the ancient ring world known as Halo, and destroyed it before its power wiped out the galaxy's sentient life. And SPARTAN-117, the Master Chief, must return to Earth with the information on the recent discovery. However, he comes upon another creation left behind by the mysterious Forerunners, and it may be up to him to save the last of his Spartans, along with the human race, once again, from the Covenant and their desire to find the artefact...

Campaign
The game is played solely in first person, and will often vary between characters. The mission may also be altered if played cooperatively.

The campaign consists of 12 levels:
 * 1) Deployment
 * 2) Big Horn River
 * 3) Circumference
 * 4) Reach
 * 5) Threshold
 * 6) Ascendant Justice
 * 7) Castle Base
 * 8) The Crystal
 * 9) Return
 * 10) Gettysburg
 * 11) Epsilon Secundus
 * 12) Unyielding Hierophant

Main Characters

 * John-117
 * Cortana
 * Frederic-104
 * Kelly-087
 * Linda-058
 * William-043
 * Catherine Elizabeth Halsey
 * Avery Junior Johnson
 * Elias Haverson
 * Danforth Whitcomb
 * Polaski
 * Locklear

Minor Characters

 * Li-008
 * Joshua-029
 * Vinh-030
 * Isaac-039
 * Anton-044
 * Malcolm-059
 * Grace-093
 * Mitchell
 * Buckman
 * Jake Chapman
 * Kalmiya
 * Araquiel
 * Zawaz
 * Jacob Jiles
 * Unnamed Huragok
 * Unnamed Sangheili
 * Unnamed Covenant AI

Levels of Difficulty

 * 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 alien monsters punish the slightest error with instant death... again and again.

Non Dual-Wieldable

 * MA5B ICWS Assault Rifle
 * BR55 Battle Rifle
 * M7S Caseless Submachine Gun
 * M6C SOCOM Magnum
 * SRS99C-S2 AM Sniper Rifle
 * M19 SSM Rocket Launcher
 * M6 Grindell/Galilean Spartan Laser

Dual-Wieldable

 * M7 Caseless Submachine Gun
 * M6C Personal Self Defense Weapon System

Support

 * AIE-486H Heavy Machine Gun
 * LAU-65D Missile Pod
 * M7057 Flamethrower

Grenades

 * M9 HE-DP Fragmentation Grenade

Non Dual-Wieldable

 * Type-51 Carbine
 * Type-50 Particle Beam Rifle
 * Type-1 Energy Sword
 * Type-2 Gravity Hammer
 * Type-25 Brute Shot
 * Type-33 Fuel Rod

Dual-Wieldable

 * Type-25 Plasma Pistol
 * Type-25 Plasma Rifle
 * Type-25 Brute Plasma Rifle
 * Type-33 Needler
 * Type-25 Spiker
 * Type-52 Mauler

Support

 * Type-52 Plasma Cannon

Grenades

 * Type-1 Plasma Grenade
 * Type-2 Spike Grenade
 * Type-3 Incendiary Grenade