Lead Marines Away from the Base

Walk down the hallway, left of the burning section, and hop into the closest Warthog. Have a couple teammates pile in, then wait for a fellow soldier to open the door and drive on through.

Now here's the deal: Drive. And fast. In fact, we don't want you to stop for anything; it'll just slow you down, and in all likelihood, get you killed. So long as you stay on the move, you can whip through the first half of this level with ease.

Note:

For the vast majority of the level, our strategy depends on you being in a vehicle. If it gets destroyed, simply press pause and restart from the most recent checkpoint to get it back. The checkpoints are frequent, so you won't lose much progress.

Stick to the right for the most part, until you come across an enemy ship hovering over a pond. Follow the left wall here to stick to the path.

Eventually, you'll reach a large blue shield (left of the barricade road) which prevents your Warthog from entering a tunnel. Park right up against it, hop out of the hog, and run in. Shoot the shield generator (the large purple thing at the shield's base to destroy it). Now hop back in the hog and continue through the tunnel.

Continue along the busted up freeway until you reach a missing portion, as indicated by several barricades. You'll sadly have to ditch the warthog for now, but worry not, you won't be without a vehicle for long. Cross the gap by running across the I-beam (or if you fall, use the far ladder to climb back up).

Get to the Town of Voi

You'll soon come across a base festering with enemies - just dart across this to the far side. Only take down any enemies directly in your path, and continue to a large boulder on the right, next to a hovering Brute tower (take doen the Brute inside it first though). Hang tight by the boulder and wait for a Wraith to roll on by - hijack it when it does and hop aboard.

About Hijacking:
To hijack a vehicle, get close and hold the Right Bumper. However, there are a few extra steps when hijacking a Wraith. After grabbing on, you must melee the driver to death, by tapping "B." Once he's down, immediately stop attacking (otherwise you'll destroy the vehicle), hop off, then climb into the driver's seat to take full control.

Note:
Like the ghost it's named after, the Wraith tank may not always appear. If this is the case, we strongly suggest restarting from a previous checkpoint and trying again -- it should eventually appear.

With the Wraith under your control, work your way to a tunnel ahead, taking down everything as you go - particularly the sniper towers and Brute Choppers. Also, if you come across a teammate, let him climb into the gunner's seat.

As you exit the cave, fire a blast between the two Choppers to kill the Brutes. Now stick to the left of the freeway to use an elevated portion to cross a gap. As you roll off the freeway, a couple of choppers may attack - target them quickly.

Head right around the mountain and prepare for an inbound Phantom to drop off another Wraith. Back up and strafe left and ride to avoid its fire, while blasting it yourself. A couple choppers may attack as well; if you can't take down the Wraith before they show up, back up and position the mountain between you and the Wraith (for protection), target the choppers first, then follow up with the Wraith.

As you circle the mountain, target a grunt high up on a left ledge, then back up again in preparation of another inbound Phantom - this time it'll drop off two more Choppers. Take them down and continue on up to a second Wraith ahead. Strafe around it and pummel it with plasma blasts. Two Wraiths down, one more to go.

Before rolling up the mountain path, target another turret on the right. As you approach the mountain's crest, you'll come across the third phantom. Stay on the lower portion of the mountain and arc your shots to kill it.

Continue onto the freeway up to a road block, with numerous Brutes beyond. Hang back and pummel them with plasma. Once the coast is clear, use the Wraith's boost to power your way through the obstacles.

The blue shield ahead marks your target destination, but there are a few more Brutes on patrol. Target a gunner on the left first, then focus on the others as they come into view. If you begin taking heavy fire, use the downed Pelican as a shield. Once the area is clear, run behind the shield and destroy the generator to complete the level.