Halo 3 cheats page 18

[partyjock]

More:Halo 3: Tsavo Highway

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.
lander brandt
Crossing broken bridge with vehciles

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.
Casey W.
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.
i, fu ftfr Chris Hilton
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.

More:Halo 3: Combat
Defeating Flood

When you kill any Flood that can come back to life by the infection forms, hit the body and it should break apart. This saves ammunition.
kingstick07
Destroying Wraiths

To easily destroy a Wraith and save time and ammunition, go to the back side. Aim at the little circle in the back. With about five to ten shots it will be destroyed.
kip
More grenades

In multi-player or system link mode, when you kill someone slash their dead body with the Energy Sword. More grenades come out of it.
Jeremy Johnson
Recharge shields quicker

If your shields are down in Forge mode, press Up and they will recharge.
lander brandt
Exploding grenades

Throw a grenade in the air, and shoot it with a sniper rifle.
rdas lander brandt
Reload quicker

If you are a Spartan or Elite and your ammunition is low and it takes a long time to reload, press Up again while reloading to instantly reload.
lander brandt
Melee faster

To melee faster, press B then press Y(2), B rapidly. It will hit again immediately.
Jacob Myers
Very fast Spartan laser fire

In Forge mode get a Spartan laser. Charge it until its almost about to fire. Before you fire, turn into the Monitor. Fly around until you get a target. Before you turn back into a human, hold RT to fire within at least half a second (if done correctly). You can use the Monitor's aimer to aim the laser.
josh nielens
Drive AA Wraith

Use the following trick to drive the Anti Aircraft Wraith. Jump on the top and kill the gunner. Then, bash the hatch open. It should be directly in front of the turret). After you have bashed the hatch open, hit the Brute inside once so his helmet falls off. When his helmet is off, hold RB and shoot him in the head at the same time. The AA Wraith is very powerful and has its own targeting reticule.
ryan hickman
Weapon descriptions

Xavier Figueroa
Assault rifle: Very handy weapon to fight all enemies with, but not vehicles. It is useful against both Covenant and Flood and is available all through the game. Pistol/Magnum: A very powerful dual-wielding gun that has high firing power. The new pistol no longer has a small zoom and has very little bullets. It is useful against both Covenant and Flood. SMG: Just as powerful as in Halo 2. It has been upgraded with higher firing power and has a recoil. It is useful against both Covenant and Flood but can be difficult to find. It can be dual wielded. Battle rifle: A powerful burst-firing rifle that has high damage and high accuracy. It is better against Covenant than Flood. It is useful for sniping. Shotgun: A low ranged but powerful weapon. It can hold small amount of ammunition but can fire in mid-reload. It is useful against both Covenant and Flood but is far more efficient when used on the Flood. Sniper rifle: An extremely long-ranged rifle that can fire four shots in one round. Is the main weapon for sniping and usually takes two shots to kill in the torso. Rocket launcher: An extremely high damage weapon that is good for taking out powerful opponents and vehicles. It is also useful against groups of enemies. It also has splash damage. Be careful, as it can be hazardous to yourself as well. Spartan laser: The most powerful weapon of the game but requires a long charged wait. It is useful for killing vehicles and powerful enemies. Vital to kill the Monitor. Plasma rifle: A powerful weapon that is great against the Flood. You can dual-wield them, but will overheat if fired for too long. Plasma pistol: One fully powered shot can take out all of your shield. A powerful but difficult weapon to use. It can be dual-wielded. It is useful because of its high range and high attack speed. It is better against Covenant. Brute spiker: A Brute weapon that is commonly used throughout the game. It has a medium-sized clip and can be dual-wielded. Is more powerful against Covenant. Needler: Can no longer be dual-wielded but is much more powerful. It can now explode with four needles. It is useful against a group, and powerful opponents. Carbine: The Covenant version of a battle rifle. Is very useful for sniping and in close combat. It fires single shots and has an average round. It is commonly used by Jackals. Brute shot: A less powerful splash weapon that is useful for taking out crowds or vehicles. It has a high range and is very common throughout the game. Beam rifle: A Covenant sniper-rifle. It does not require clips but cannot be fired repeatedly due to overheating. It has high range and is powerful against Brutes. Energy sword: A melee weapon that is extremely powerful against one opponent, usually resulting in a one-hit kill. It is useful against both Covenant and Flood. It has a small rush towards the target before striking. Gravity hammer: A rare and powerful melee weapon. It is only used by extremely powerful Brutes. It can take out crowds and can push opponents away. It has a tiny rush when attacking. Frag grenade: A powerful and dangerous grenade that has the highest kill-radius. It has a bounce that can make killing opponents difficult. Plasma grenade: A weaker grenade that can stick to opponents and detonate, killing those around it. It sticks only to opponents. Spike grenade: A less powerful but lethal version of a plasma grenade. When detonating it sends spikes shooting in all directions. It Can stick to both opponents and vehicles. Firebomb grenade: Explodes on impact spreading flames around the area. It has a burning effect that is good against that Flood more than Covenant but

[chocomaddog]

Cool...Add CoreyD97 its me can you show me the invisible bridge one plz