Assault on the Control Room

The Assault on the Control Room was a major skirmish within the Battle of Installation 04.

The battle
Spartan-II and Cortana travel in Echo 419 to a canyon via underground tunnels. After making their way to a bridge, a Pelican containing Fire Team Zulu heads past. The Pelican drops off the troops and leaves, crashing nearby.

After the Master Chief reaches the ground, he destroys a Wraith and 2 ghosts to save the marines. Further down the canyon he encounters the rest of Zulu, along with the crashed Pelican and a Scorpion Tank.

After a travel through underground structures in the tank with Zulu, he reaches the end of the line at a tunnel too small for the tank. There, he encounters another team a long with 2 Hunters and a Zealot. At the other end of the tunnel, Pelican Echo 419 picks the Marines up and Evacs them. At the time, the Chief is nearing the Control Room.

After going past another two Hunter pairs, he reaches the Building. Upon his entrance, he plugs Cortana into the Control mainframe. He is then told by Cortana to stop Keyes from reaching a building Keyes thought was a weapons cache. He leaves on E419, leaving Cortana behind.