Tsavo Highway

Tsavo Highway is the fourth campaign mission of Halo 3.

Upon completing it on Normal, Heroic, or Legendary the player will unlock The Road achievement, worth 20 Gamerscore. If a player gets more than 15,000 points in the meta-game he or she will unlock the Cavalier achievement, worth 10 Gamerscore. The Tough Luck Skull can be found on this level, unlocking the achievement of the same name. It is worth 10 Gamerscore. By finishing this level on Normal you get the EVA chest. By finishing this level on Heroic the player will receive the Flight chest plate. By finishing this level on Legendary the player will receive the EOD chest plate.

Summary
After successfully evacuating the upper area of the Crow's Nest base, SPARTAN-117 finds himself in an underground garage containing multiple Warthogs and leads a group of Marines out of an underground tunnel. He then leads the surviving marines towards the town of Voi. A Pelican drops a pair of Troop warthogs and one regular M12 (with M41 LAAG). After fighting his way down the highway, through many Covenant troops, SPARTAN-117 breaches the barrier blocking the path leading to Voi and the ancient Forerunner artifact, buried beneath the Earth's surface.

Transcript
{Gameplay}

Full Contact Safari
Warning: Hitchhikers may have Jet Packs.

The Master Chief starts to wake up.


 * Gunnery Sergeant Reynolds: "What happened?"

Note that sometimes Stacker will appear in the place of Reynolds but will still say the dialogue.

''The Master Chief comes to in the wreckage of the elevator, with wounded Marines being treated and other Marines trying to regroup. The elevator shaft above is engulfed in flames.''


 * Commander Miranda Keyes (COM) (Signal with much static): "Chief, please respond. What's your status, over? If you can hear me, find transport. Head for the town of Voi."


 * Wounded Marine #1: "Ah! I've got a broken rib."


 * Marine Corpsman (Chips Dubbo): "Hey. You wanna bleed out?"


 * Wounded Marine #1: "No..."


 * Marine Corpsman: "Then I've gotta keep pressure on the wound."


 * Wounded Marine #2: (coughs) "I think I broke something!"

A squad of Marines are standing directly outside the elevator.


 * Marine #1: "Another bombing run?"

or


 * Marine #1: "Did we get everyone out, sir?"

or


 * Marine #1: "'You think the Brutes know where we are?"

''On the other side of the underground vehicle maintenance bay, a Marine Sergeant shows up at the other side of the elevator wreckage and begins to handle the situation. He runs up to the gate, coughs loudly, and fires a battle rifle burst at a security camera to perhaps prevent any remaining Covenant forces from finding the squad of Marines.''


 * Gunnery Sergeant Reynolds: (coughs) "Settle down, Marines! Somebody hit the emergency power."


 * Marine #2: "On it, Sergeant."

The Marine heads to the generator room and activates the emergency power.


 * Marine #1: "Any word from Charlie-Two? We got separated."


 * Marine #3: "Nah, man. Alpha-Six, they're all gone too."


 * Marine Corpsman: "The swelling, could be a fracture. You think you can stand?"


 *  Wounded Marine #1: "I don't know, doc."


 * Gunnery Sergeant Reynolds: "If you can walk, set your boots on the line."

''The Master Chief and any Marines fit for duty form up on the other side of the maintenance bay, with an M12 Chaingun Warthog and an M831 Troop Transport Warthog (or two M12 Warthog LRVs on co-op) parked and functional. The Marine Corpsman remains with the wounded Marines. The lights above the two Warthog turn on.''


 * Marine #1/#3: "What's our situation, Sergeant?"


 * Reynolds: "Not sure; can't reach the Commander. Too far underground."

If the Master Chief jumps in either Warthog:


 * Reynolds: "Chief's got the right idea.”


 * Reynolds: “Let's mount up, get the hell outta these caves."


 * Marines: "Yes, sir!"

The Marines get in the Warthogs.


 * Marine #1: "I'll get the door, sir."

The Marine opens the door (or the Chief can too), and the Warthogs proceed down the tunnel.


 * Reynolds: "Second Squad? We're coming through!"

''At the gate leading out of the caves, two Marines from Second Squad are pinned down at a checkpoint by a small group of Kig-Yar and Unggoy. The Warthogs take out the Covenant forces, and head out. Another group of Kig-Yar spot the Warthogs and retreat into the hill away from the base entrance.''


 * Reynolds: "Don't leave any of 'em standing!"

or


 * Reynolds: "Conserve ammo. Run 'em over!"

or


 * Marine #1: "Look at the little bastards run!"

or


 * Marine #1: "Surprise, crap-face!"

After taking out the fleeing lance they observe the massive wreckage from the New Mombasa Orbital Elevator, along with a crashed Phantom.

If the Chief approaches the cliff and sees a long line of the elevator's wreckage.


 * Marine #4 (COM): "The Mombasa Space Elevator."


 * Marine #3 (COM): "It collapsed when the city got glassed."


 * Marine #4 (COM): "But the tether was thousands of kilometers high!"


 * Marine #3 (COM): "Yeah? Well, now it's scattered all over the Savannah."


 * Marine #4 (COM): (astonished whisper) "Holy crap..."

The Chief listens to a radio transmission from the wreckage of a crashed Phantom


 * Unknown Jiralhanae Commander (COM): "Chieftains! Rally your packs!"


 * Unknown Jiralhanae Commander (COM): "Kill all survivors, let none near the crater!"


 * Unknown Jiralhanae Commander (COM): "The Prophet will soon complete his blessed task!"

The Warthogs continue on.


 * Reynolds (COMS): "Chief, still can't get the Commander. COMs are a mess, Pelicans are scattered. Best thing now, get some distance between us and the base. Brutes are gonna be looking for survivors."

The Warthogs reach another crashed Phantom and kill the Covenant troops around it.


 * Unknown Jiralhanae Commander (COM): "I see it, pack brothers! The Holy Relic! What fools, to live so long on hallow ground! Never knowing what lay beneath the surface."

''The Warthogs keep pressing on, reaching a Covenant-held dam. A Phantom hovers overhead while many Covenant troops (including Shade turrets and Kig-Yar Snipers on higher difficulties) fire on the UNSC force. The Phantom leaves and it doesn't take long before the Warthogs overpower the Covenant at the dam.''

If the Chief stalls:


 * Marine #1: "Up and around that dam, sir."

The Chief navigates around the dam.


 * Gunnery Sergeant Stacker (COM): "I repeat: My convoy's been hit. I've got wounded-(static). We're on the Tsavo Highway about-(static)-east of Voi. Someone, anyone, please, respond! (Static and cut-off)."

If the Chief stalls:


 * Marine #3: "Tsavo Highway is just ahead, Chief."

''The Warthogs arrive at the Highway, encountering Jiralhanae Choppers and hostile infantry. One Chopper rams and destroys a fully manned attacking Warthog. Another Chopper soon follows. On higher difficulties, a Jiralhanae War Chieftain armed with a fuel rod gun leads the Covenant troops.''

If the player dismounts the vehicle and goes into the small checkpoint where Stacker is located:


 * Stacker: "We were en route to Voi, Chief. Banshees jumped us, started strafing... pretty much ruined our day."

Note: ''If Stacker was the Sergeant the player started the level with, Reynolds will be present instead but may or may not say the above dialogue. ''

''After a pitched battle involving many Unggoy, Jiralhanae and Shade turrets, the UNSC force are victorious. The Warthogs journey forward toward the tunnels, but are blocked off by an Anti-Vehicle Barrier. A swarm of Yanme'e fly out of the tunnel, but they are easily cut down by the Warthogs.''


 * Stacker: "Marines in Voi really needed my supplies, Chief. But I'm sure they'll be plenty happy to see you. Head on through the tunnel and give those boys a hand."

If the Chief waits for a while at the barrier:


 * Stacker (COM): "Take down that barrier, Chief. Power supply should be inside the tunnel."

or


 * Stacker (COM): "Chief, the barrier only works against vehicles. You should be able to walk right through."

The Chief walks through the shield, and destroys its power source.


 * Prophet of Truth (Hologram): "The gods will not begrudge our excavation. By uncovering this relic, we pay homage to their glory. When the dust settles, we will all see what I already know: here lies the Path, the start of our Great Journey."

''The Warthogs continue along the Tsavo Highway through the tunnel. When they get out and reach a bridge, a soars ahead.''


 * ONI Recon 111 (COM): "Commander. This is ONI Recon One-Eleven. The cruisers above-(static). They found-(static)"


 * Commander Keyes (COM): "Say again, Recon? You're breaking up."


 * ONI Recon 111 (COM): "There's something in the crater, Ma'am. Something beneath the storm."

''The Warthogs reach a gap in the bridge and cannot continue. The Master Chief clambers across broken beams and bars and continues on foot. The Marines follow. A massive Forerunner artifact lies under the middle of the crater, and the Forerunner Dreadnought sits in the middle of it. Covenant ships are circling the crater. Banshees fly past the highway, but pay no attention to the UNSC forces.''

The Broken Path
Wraiths and Choppers.


 * Commander Keyes (COM): "Master Chief? Finally, a good connection. Truth has excavated a Forerunner artifact; we have to assume it's The Ark."


 * Sergeant Johnson (COM): "Keep pushing to the town of Voi, Chief. Resupply birds will meet you in the next valley."

''A pair of Marines are under attack by a Jiralhanae and his Unggoy subordinates near a pile of crates. The Chief rescues them and they join him to assault a large group of Covenant that are attacking an outpost at the top of a rise. The Chief and the Marines eventually clear the sector.''


 * Marine #5: "We've got reinforcements, Marines!"


 * Marine #6: "Woohoo! Yeah!"


 * Marine #7: "Booyeah!"


 * Marine #8: "Ohhhh-yee-HAH!!"

A Phantom approaches with reinforcements.


 * Marine #5: "Sir, Recon spotted Covenant armor ahead. Pelicans are inbound with heavy weapons; we need to hold out until they arrive."

If the Chief heads off on foot before the Pelicans arrive:


 * Johnson (COM): "You've got hostiles armor ahead, Chief. I rounded up a few resupply birds. Advise you to maintain your position until they arrive."

''The Phantom disgorges a large pack of Jiralhanae. The pack is soon wiped out by the Master Chief and his allies. A second Phantom swoops in and deploys additional enemy troops, including a Jiralhanae War Chieftain wielding a fuel rod gun.''

After the enemy infantry are defeated, a Wraith appears.


 * Marine #1: "Wraith! Get to cover!"

The Chief neutralizes the Wraith.


 * Johnson (COM): "Watch it now, Pelicans coming in!"

or


 * Marine #5: "Pelicans coming in."


 * Johnson (COM): "Brutes have plenty of armor between here and Voi, Chief, but this Warthog should help you punch on through."

''Pelicans arrive and drops off Warthogs, along with some additional Marines. The Master Chief has a choice of taking one of the Warthogs the Pelicans drop off, or the Wraith that previously attacked if not destroyed. The tunnel onward on the Tsavo Highway is closed off, so the Chief goes up the trail where the Wraith came from, and finds a short tunnel leading back to Tsavo Highway. The entrance is guarded by several Jiralhanae Choppers, deployable lookout towers, and a pair of Shade turrets (on higher difficulties). The Chief and the Marines clear out the blockade and head through the tunnel.''

If the Chief stalls:


 * Marine: "We're getting close to Voi. Keep going!"

''The Chief exits the tunnel and comes across a pair of parked Choppers. He eliminates the dismounted drivers before they can get to their vehicles. Two Marines emerge from hiding and greet the Chief.''
 * Marine #2: "Wraith, Master Chief, circling that hill! Brute Choppers too, so stay sharp!"

Or


 * Marine #3: "Wraith, Master Chief, circling that hill! Brute Choppers too, so watch your back!"

''Nearly a dozen more Choppers, a few Wraiths and Shade Turrets defend the route back onto the highway. The Chief pushes on, supported by a steady supply of Warthogs. Despite being greatly outnumbered and outgunned, the Chief and the Marines eventually clear the zone.

If the Chief approaches the cliffside overlooking the massive storm over the vast crater beyond the cliff and there are Marines accompanying the Chief:
 * Chips Dubbo (COM): "Look at the size of that thing! Wonder how old it is?"


 * Marine #8 (COM): "Don't know. But I do know that ain't a normal storm."

If there are no Marines are accompanying the Chief:


 * ONI Recon 111 (COM): "Commander, I can see most of it now. Readings are all over the EM spectrum."


 * Commander Keyes (COM): "Roger that, Recon. Shut off your gear, fall back. I'll monitor from Kilo 23."

''The Chief continues along the Highway. A large pack of Brutes bar his way.''


 * Johnson (COM): "Chief, the gate to Voi is dead ahead. Smash the Brute blockade, open her up!"

A large number of Jiralhanae wait behind Covenant roadblocks in anticipation of the approaching UNSC force.


 * Jiralhanae: "The Demon must not pass!"


 * Prophet of Truth (Hologram): "My Dreadnought, the vessel that has so long been the focus of our worship, now rests on its true pedestal. Even now, its engines spark greater ones below, relics long without power, yet ready to fulfill their divine purpose. Stand fast! Keep our enemies at bay! Soon, my brothers, we will all have our reward!"

''The Master Chief and any remaining Marines are forced to abandon their vehicles. They press forward, encountering heavy resistance from the Jiralhanae. Upon entering the next section the team comes under attack from a Shade turret as well as several Jiralhanae Jumpers. Wiping this force of Covenant out, the Chief attacks the last group of Jiralhanae led by a War Chieftain. He eventually clears the area. The only thing left standing between the UNSC and Voi is another Anti-Vehicle Barrier in the tunnel.''

If the Chief waits for a while at the barrier:


 * Stacker (COM): "Take down that barrier, Chief."

The Chief destroys the power source with ease.

{Cutscene}

''The Master Chief (and the Arbiter on co-op) leave the tunnel entrance. Two Pelicans, one of which is Kilo 23, arrives to drop off an M12 Warthog LRV and Marines. Commander Keyes, piloting Kilo 023, has Lord Hood on one of the video screens inside the cockpit. The Chief heads towards the cliffside.''


 * Commander Keyes: "Lord Hood? We made it."


 * Lord Hood (Video COM): "Music to my ears, Commander. What about the Ark?"


 * Commander Keyes: "Fully uncovered, sir."


 * Lord Hood (Video COM): "Then we don't have much time."

Chief observes a from the cliff.


 * Lord Hood (Video COM): "Marines? The Prophet of Truth doesn't know it yet, but he's about to get kicked right off his throne. We will take our city back. And drive our enemy into the grave they've been so happily digging. One final effort is all that remains."

''The Pelicans fly off. The Master Chief draws his MA5C and walks to one of the Warthogs to retake Voi from the Covenant.''

Fade to black.

Level ends.

Glitches

 * In the beginning of level, if the player goes to where the Marine is turning on the power, there is a switch. When approached, the switch will move down. However, when the player moves away, it will go back up. The switch does not appear to do anything.
 * On the stretch of road with the Pipe running adjacent to it, if you are in a Warthog and you stop at a certain place so that a metal, curled post is above you, your Warthog will turn black.
 * If you look at where the appears from the cliff after the Drone ambush, a glitch will happen where you will see the side of the cruiser before the ship actually appears.
 * Sometimes, Sergeant Stacker's character model will appear instead of Sergeant Reynolds, however all scripted dialogue will remain unchanged. Oddly, even after both Sergeants are together, Reynold's voice will still come from Stacker's model, and vice-versa. However. if Stacker was killed before the players sees Stacker himself, the actual Stacker will have Stacker's character model.
 * It is possible to jump the gap in the bridge with a vehicle if you have a Gravity Lift handy. However, if said vehicle is a Warthog, marines will not mount it, most likely because they were programmed to leaving it once they reached the gap. This can also be done by knocking down a barrier and pushing it around with a Warthog until it turns into a makeshift ramp, although this is slightly time consuming. An easier way to cross the gap is by bringing your Chopper as far forward as you can without falling off and then boosting.
 * Where you meet Sergeant Stacker, it is possible to find a Brute with a Type-50 particle beam rifle that will not attack you. He can be found on the Deployable Lookout Tower near the cliff. If an enemy gets too close to him however, he will start attacking you..

Mistakes

 * At the beginning of the level, if you look at the medic treating the injured marine, he will occasionally move his hand as if clicking on a data pad. However, there is no data pad in his hand to click on.
 * At the end of the level, regardless if you had the Deployable Lookout Tower knocked off, it will appear as though it was never touched.
 * In this level it is stated that the space elevator collapsed when the city was glassed, but actually it fell a day before.
 * Occasionally, if you have Sergeant Reynolds climb into your Warthog at the beginning of the level, he will appear to be holding no weapons.

Easter eggs

 * The Tough Luck Skull is found on this level.
 * The two cave doors in the beginning of the level are both door number 7.
 * The Marathon logo is visible on the hangar doors of the Covenant CCS-class cruiser that passes overhead.
 * In the Campaign lobby, Mission Start is labeled as "Warning: Hitchhikers may have jet packs". However, no Jump Pack Brutes appear before Rally Point Alpha. This is also a reference to the last chapter name in the Halo: Combat Evolved level The Maw: "Warning: Hitchhikers May Be Escaping Convicts."
 * Admiral Hood says at the end of the level that, "one final effort is all that remains." The Prophet of Truth says this on the speakers in the Halo 2 level High Charity. This is also the name of a song in the Halo 3 Original Soundtrack.

Miscellaneous

 * If you start this level on Rally Point Alpha, you will hear the Halo level soundtrack, "Full Circle".
 * It is possible to find more Sniper Rifle ammo in the area after the destroyed bridge where you are forced to dismount. Climb the hill to the left of the area to get to the top of the structure and there is a dead Marine with a Sniper Rifle.
 * It is possible to carry over into the beginning of the next level The Storm whatever weapons and ammo you retain from the end of this level (e.g. Sniper Rifle and Battle Rifle). Weapons can also be carried over from the previous level, though exactly the same weapon cannot be carried over to The Storm. The player can still carry them over if it is a different weapon.
 * This level along with The Covenant and The Storm, are the only three levels in Halo 3 where you can drive a Transport Warthog.
 * Tsavo is a region of Kenya close to where the Tsavo and Athi rivers meet and was the place where the Uganda Railway passed over the Tsavo river. The bridge will not be encountered as it is on the other side of Voi.
 * It is the first Halo 3 campaign mission to feature usable vehicles.
 * Scattered across the savannah are the remains of the New Mombasa Orbital Elevator. It collapsed after the slipspace rift created by the Prophet of Regret's ship weakened the support structure, and not by the Covenant glassing the city.
 * There is a weapons cache on top of the tunnel in the first area where the Pelican drops off two Warthogs, but if you enter it, the Wraith will bombard you from a distance.
 * Near the end of the level, you can see the eastern edge of Voi on the opposite side of the crater.
 * This is the only level where Thel 'Vadam is never seen in single player Campaign mode. This is probably because he, in Bungie canon, had been evacuated from Crow's Nest via Landing Pad Bravo when the Brutes disarmed the bomb.
 * This is the first level you can encounter s and Brute Choppers.
 * At Bungie's Halo 3 preview event in Seattle, Washington (Close to where Bungie Studios is actually located on the map) Tsavo Highway was first shown to the groups that attended the event's meeting.
 * In the Halo 3 Epsilon, no static effects were added to dialogue. It was possible to hear the complete transmissions from Stacker and ONI Recon one-eleven respectively: "We're on the Tsavo Highway, about five klicks east of Voi." and "The cruisers above the crater. They found something."
 * This is the only level in Halo 3 where John-117 has no dialogue in the cutscenes related to the level.
 * This level along with The Ark and Halo are one of the only levels to not feature any Cortana moments. However, Halo does feature a Gravemind moment instead.
 * After taking down the first shield generator and moving through the tunnel, there is a marine outpost with a single dead marine with a Battle Rifle. There is a fully charged Plasma Rifle outside that is the only one unaffected by the Famine Skull.
 * This, and the level The Covenant are the only levels to have Beam Rifles by default on any difficulty.
 * The second chapter of the Halo 2 soundtrack, Epilogue, has the name "Road to Voi", this level could be reference to the chapter, or the chapter is a hint to gamers that Halo 3 will have contents that will do with the town of Voi.
 * Tsavo Highway was originally a longer mission, large sections were removed due to production limits.
 * This level is fairly similar in concept to Halo 3: ODST's Uplift Reserve.
 * At the level selection menu, if you click on Tsavo Highway and highlight "Mission Start", the description will say "Warning: Hitchhikers may have jetpacks." This is a reference to the Jetpack Brutes you encounter along the sides of the road in the level.