The Silent Cartographer
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The Covenant believe that Halo's map room, the Silent Cartographer, is located somewhere under an island, with multiple structures concealing the installation. The Master Chief leads the UNSC Marines in an assault on that island in order to locate the Control Room.
In Halo: Combat Evolved Anniversary, completion of this level on any difficulty rewards the player "The Silent Cartographer" achievement and 25 Gamerscore. On Heroic or Legendary, if the player doesn't lose any Marine allies in the initial assault on the beach, they receive the "Beachhead" achievement and 10 Gamerscore. On Heroic and Legendary, if the player doesn't fire their weapon at all after accessing the Cartographer, they are awarded the "Grenadier" achievement, worth 25 Gamerscore.
In Halo: The Master Chief Collection, completing the level on any difficulty unlocks "The Silent Cartographer" achievement worth 10 Gamerscore. "Beachhead" and is unlockable with the same criteria and is worth 10 Gamerscore. "Grenadier" is replaced by the Pacifist achievement worth 10 Gamerscore. Beating the level's par time and par score will unlock the "Hit The Beach" and "Charted" achievements respectively, each worth 10 Gamerscore. Activating the Terminal found on the level will unlock the "Idle Hands" achievement worth 5 Gamerscore, while finding the Famine and Bandanna Skulls will unlock the "Skulltaker Halo: CE: Famine" and "Skulltaker Halo: CE: Bandana" achievements, each worth 5 Gamerscore.
The Silent Cartographer
The Pelican dropships descend on the beach's corner. Covenant troops begin firing at them.
The UNSC forces move forward, and eventually the beach is cleared of Covenant hostiles.
As the Chief boards the driver seat of the Warthog, two Marines occupy the passenger seat and the turret.
The Warthog proceeds to drive off around the island, encountering Covenant resistance. The vehicle approaches a structure protruding out of the cliff wall. A Spirit dropship beside it takes off.
They eliminate the patrolling troops outside the structure.
The Chief enters the structure and reaches the top a slope that leads to an open door. A group of Covenant stand guard at the door, with a Sangheili Zealot blocking the way in.
The doors close as the guards, except for the Zealot, are eliminated.
The Chief returns to the surface and explores the island on the Warthog. He eventually passes the substation, which juts out of a cliff.
They come across a path guarded by Covenant leading up into the island.
The Chief makes his way towards the security substation, fighting past multiple Covenant troops including a pair of Mgalekgolo. Eventually, he reaches the substation. Once inside, he has to deal with another pair of Mgalekgolo.
He proceeds into the facility, meeting the security override panel.
If the Security Station is entered before going to the auto-locking door to the Cartographer:
The Chief shuts down the system.
The previously locked door opens to reveal the Sangheili Zealot, who dashes out of the door in surprise, his energy sword at the ready.
The Chief moves down the hall from the security substation, towards the exit.
A group of Stealth Sangheili attempt to ambush the Chief. The Chief defeats them and heads back up.
The Chief exits the substation and sees Bravo 022's wreckage on the beach below. Marine bodies and Covenant forces can be seen around it.
The Chief returns to the entrance to the Cartographer which is now guarded by another pair of Mgalekgolo. The Chief defeats them and enters the structure again. He enters through the now-unlocked door leading to the shaft. The Zealot is not present.
The Master Chief walks out onto the platform overlooking the shaft and kicks a loose piece of debris (an Unggoy methane mask in Anniversary) down into the seemingly bottomless shaft. No sound is heard back. The Chief looks up and around.
The Chief moves farther down into the facility, wiping out any Covenant resistance. He moves into the third of four levels.
The Chief finally reaches the Cartographer, which is guarded by multiple Sangheili. The Chief soon takes them out.
The Chief activates the holo-panel.
The Cartographer hologram display begins to spin, and the diagram of Halo begins to break into sections.
Covenant reinforcements, including the Sangheili Zealot seen previously, have retaken the upper levels of the facility, forcing the Chief to fight his way back up.
The Chief reaches to the exit of the facility. Any Marines on the Warthog will have been killed by a squad of Stealth Sangheili, who the Chief quickly deals with.
The Pelican arrives. The Chief boards it.
Echo 419 lifts off from the platform and rises quickly, circling the center of the island.
The structure where the first pair of Mgalekgolo appeared lifts up, revealing a vertical underground tunnel; Echo 419 lowers into it as the structure returns to its original position.
Echo 419 continues to lower through the structure. The top closes with a crash.
Fade to black.
Halo: Combat Evolved
Halo: Combat Evolved Anniversary