More:Halo 3: Tsavo Highway

From GameWinners

Contents 1 Hidden area 2 Beam rifle in Campaign mode 3 Crossing the broken bridge with vehicles 4 Firefly reference

Hidden area

After the part where you exit your Warthog, jump across the bridge and kill the Brute and two Grunts that are attacking your men. Turn directly around, facing toward where you came from. Look to your left and you will see a structure. Go up to the wall on the structure and look to your right. There should be a pathway. Follow the path until you get on top of a bridge-like structure. There should be some dead UNSC Marines, a sniper rifle, and some other ammunition.

Beam rifle in Campaign mode

Normally you cannot find a Beam Rifle in Campaign mode. Start the mission, get in the Warthog, and wait for the marine to open the door. When he opens the door, drive out of the cave and when you are out, listen very carefully to the Marines. When a marine says "Snipers", get out of the Warthog and kill the Jackals close to a flying platform (the purple ones lifted with a big grav lift which has turrets on it). Both of those Jackals carry a Beam Rifle.

Crossing the broken bridge with vehicles

• When you reach a bridge with a Warthog with barriers, normally you cannot cross this area (at least not easily). However, back in one of the buildings before the bridge is a Grav Lift. Grab it. Throw it a bit before the break in the bridge then run the Warthog or any other vehicle over it. This will make the next area much easier, especially under the Legendary difficulty setting.
  

• When you get to the bridge where you have to leave your vehicle, slow down and look at the barriers. They can be flipped over to create ramps. Hit a loose barrier so that the top of it falls over away from the immovable barriers. Position it as close to the immovable barriers as possible, then get a good running start before you hit it. It is easiest to push it from the end of it, then turning it to get it into position. Also, it is easier to use a Warthog to push them. The Warthogs usually flip in the air, but they usually make it across the gap.
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• There is a point on the bridge where you cannot pass with a vehicle. There is a steel girder that you can walk across, but cannot drive your Warthog over. To get across, get into a Chopper and drive through the hole in the cement fence. Drive the Chopper across the steel girder and you can use it to kill the Brutes.
  

Firefly reference

One of the Marines who rides with you in the Warthog makes multiple references to "Vera" his gun. This is a reference to Jayne Cobb from the cult TV show Firefly. Additionally, Tudyk is the voice of a Marine in the game. He is joined by his Firefly co-stars Adam Baldwin and Nathan Fillion who also both voice Marines. All three actors are given personalities in the game that match those of their characters from Firefly.