This article is about the campaign level. For other uses, see Library (disambiguation).
The Library is the seventh campaign level in Halo: Combat Evolved. It begins after 343 Guilty Spark teleports John-117 from the swamp he was in to the Library of Installation 04. The Master Chief must battle through four Flood-filled levels to reach the Index chamber.
In Halo: Combat Evolved Anniversary, upon completion of this level on any difficulty rewards the player the achievement "The Library" and 25 Gamerscore. If the player completes the level on Heroic or higher without dying, he or she is rewarded with the achievement "That Just Happened", worth 10 Gamerscore. On Legendary, players who complete the level in 30 minutes or less receive the "Speed Reader", which is worth 25 Gamerscore.
In Halo: The Master Chief Collection, completing the level on any difficulty unlocks "The Library" achievement worth 10 Gamerscore. "That Just Happened" is unlockable with the same criteria and is worth 10 Gamerscore. Beating the level's par time and par score will unlock the "TLDR" and "Reading Room" achievements respectively, each worth 10 Gamerscore. Activating the Terminal found on the level will unlock the "Quis custodiet ipsos custodes?" achievement worth 5 Gamerscore, while finding the Black Eye and Eye Patch Skulls will unlock the "Skulltaker Halo: CE: Black Eye" and Skulltaker Halo: CE: Eye Patch achievements, each worth 5 Gamerscore.
The view flies through the main central chamber of the Installation, through a rotating doorway, to find 343 Guilty Spark and the Master Chief teleporting in.
Over the course of the level, 343 Guilty Spark mutters various phrases, which include:
If the Chief dies:
If the Chief attacks 343 Guilty Spark or the Sentinels:
The Chief nears the Index Chamber
Spark flies over a wall separating a central chamber and the hallway the Chief is currently in. The Chief reaches, and goes through one of the rotating doors.
The Chief emerges into the large central chamber. Flood forms emerge behind the walls and approach the Chief.
The Chief comes to a huge locked door.
Spark flies through one of the tunnels. Flood forms assault the Chief. The Chiefs defends himself until Spark returns.
If the player goes the wrong way.
The Chief and Spark move into the next hallway. The Chief continues to fight the Flood.
The Chief, under Spark's lead, fights through the facility.
They continue through the facility, going through another hallway.
The Chief fights through yet another hallway.
They go further down another hallway.
Spark sends a group of Aggressor Sentinels to assist the Chief.
The Chief nears the first platform lift.
The Chief rides the first lift to the second floor.
Wait, It Gets Worse!
They move a short distance down the first hall of the second floor.
The Monitor leaves temporarily, and soon returns to the Chief with the door open.
The Chief encounters another large door.
The Chief approaches another hallway on the second floor.
The Chief once again fights through another hallway.
The Chief finds and rides the second platform lift.
But I Don't Want to Ride the Elevator!
The Chief goes into the first hallway of the third floor.
The Chief comes into another hallway, but this time it's large, open, cavernous.
The Chief enters another hallway.
The Chief reaches the third floor's locked door.
Spark once again leaves and returns to the Master Chief.
The Chief moves into yet another hallway, but this time with slightly more Flood forms.
The Chief rides on the platform lift to the fourth floor.
Fourth Floor: Tools, Guns, Keys To Super Weapons
The Chief enters the first hallway of the fourth floor.
The Chief clears the route to the Index platform, fending off several remaining Flood forms. He reaches the platform.
The platform moves down to the lowest floor.
The platform's bottom ledges interlock with the ridges below, and it finally comes to a halt.
The Chief walks slowly over to the Index, which is held in a protective sheath. The sheath unlocks itself as its sections move outwards before the Index itself pops slightly out of the top of the sheath. The Chief removes it and stares at it for a moment before 343 Guilty Spark zaps it from the Chief's hands and into some sort of trans-dimensional storage chamber inside the Monitor's body.
Spark and the Chief teleport away from the platform.
Fades to black.
The chapter "Fourth Floor: Tools, Guns, Keys To Super Weapons" is referenced in Halo: Reach's campaign level Long Night of Solace with the chapter title "First Floor: Aliens, Beaches, Secret Launch Stations." It is also referenced in the Halo Wars 2 achievement for completing the level The Foundry, the achievement's title is Fifth Floor: Tools, Guns, Super Weapons.