Ghost Town
As the chief was approaching the city to clear out the covenant he received a transmission from Commander Keyes. "Chief, the Prophet of Truth has found the ark. Our only chance of stopping him is a surprise aerial assault. Clear this sector of covenant anti air artillery so we can bring home the admirals ships. Good hunting."
As soon as the chief opened the gates into the city he was met by Covenant, they were everywhere and the marines knew that they would not go quietly. Regardless of the challenge at hand they began their assault defeating wave after wave of Covenant. After they had cleared the passageway into the city the Chief found a Ghost, this was an immense stroke of luck, the Ghost was fast, nimble, and thanks to its dual plasma cannons an effective weapon with an unlimited supply of ammo.
As the chief and marines entered the first of two clearings in the city they learned that Covenant air traffic had increased over the ark. This meant one thing, the Covenant was getting closer to using the ark to fire the Halo rings. The Chief had to hurry to clear the anti air artillery in order to get reinforcements in time to stop the Covenant and save Earth.
As the Chief approached the first Anti-Air-Wraith, he realised the area was swarming with covenant, armed with more Wraiths and Ghosts. This was going to be a heavyweight fight. The Chief discovered the best way to defeat the other Ghosts was to get behind them and shoot out the operator, the only problem with this technique was that the Covenant soon caught on so now the Chief needed eyes in the back of his head.
Once the Ghosts had been defeated it was time to go after the Wraiths, this was where Master Chief had to get creative, so he left his Ghost and before the Wraith had chance to see him he jumped onto it, ripping the hatch of the drivers compartment open and dropping in a grenade, diving off the Wraith before it exploded. Now all the Chief had to do was find the other Wraiths and do the same. After the other Wraiths were destroyed the Chief moved on to the next area, where he found yet more Covenant; Wraiths, Ghosts, not to mention the Covenant that were on foot. However unfortunately for the Covenant this left the Chief in the thick of battle, where he thrived, taking out all Ghosts, Wraiths, Choppers, and covenant foot soldiers, just as he had done in the previous area.
Just as everyone thought the area was clear the Chief was contacted by Johnson, "hold on, something big coming up." As it got closer the it could be heard and instantly the Chief recognised it as a Scarab tank, the behemoth was a giant walking tank, the chief knew the only way to stop it was to take out one of its legs and take out the reactor, but this was easier said than done. As soon as the Scarab arrived the Chief began his assault joined by the marines. They took out the Scarabs legs and the Chief climbed inside only to be met by 4 Brutes, after he had fought his way through the Brutes the Chief found himself at the reactor, he emptied a full magazine worth of ammo into the reactor, now he just had to get clear of the Scarab to escape the upcoming explosion. As the Chief got clear the Scarab exploded in a flash of brilliant white light, illuminating the entire area. Once the area was clear and it was safe to air support to enter, the Arbiter was dropped off along with more marines and ammo.
All that remained was an anti-air cannon in the next area, this had to be neutralised before Lord Hood could start his attack run on the Covenant ships. On his way to the next area the Chief found a machine gun turret, so he ripped the 50 calibre machine gun from its mount and took it with him, knowing it would come in handy. Shortly after taking the turret the Chief ran into two Hunters, just the Hunters alone took the whole 200 50 calibre bullets to take down as their armour was so strong. Now all the chief has to take out an anti-air cannon was a half empty assault rifle, a magnum, and just a few marines as the others had stayed behind to protect civilians, and there was still Covenant between him and his target. Fighting through the relentless Covenant the Chief found his way to the anti-air cannon; he just had to find a weakness. After a short look he discovered that there was a vent underneath the cannon which opened after each time it fired, the Chief soon realised that a couple of well timed grenades could get through that vent and take out the cannon. So the Chief threw in his grenades getting then both through the vent decimating anti-air cannon making Lord Hood's attack run possible.