Achievements...
	Alternate intermission sequenc...
	Catapult...
	Dead Jackal noises...
	Flood ignores you...
	Get attacked by allies...
	Ghost tricks...
	Grenade meteor shower...
	Hide on Scorpion...
	Invincible Warthog...
	Jump faster...
	Jump higher...
	Oddballs...
	Play as a Grunt Master...
	Programmer reference...
	Respawn at previous checkpoint...
	Scraping the "wings" off a Ban...
	Secret coded message...
	Stuntman...

Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Air Traffic Control ( 20 points )	Blow up the Banshee in flight while manned, with grenades or the rocket launcher.
Assassin ( 10 points )	Melee an opponent from behind.
Bonecracker ( 10 points )	Hit and kill an opponent with a melee attack.
Cairo Station ( 30 points )	Complete Cairo Station at Normal, Heroic, or Legendary.
Carjacking ( 5 points )	Steal an occupied vehicle from an opponent and take it over.
Counterpoint ( 5 points )	Kill the sword carrier.
Decorated Soldier ( 10 points )	Get awarded at least 8 different medals in one non-team game.
Delta Halo ( 30 points )	Complete Delta Halo at Normal, Heroic, or Legendary.
Demon ( 25 points )	Complete any campaign level without dying once on Normal, Heroic, or Legendary.
Double Kill ( 20 points )	Kill 2 opponents within 4 seconds.
Flaming Ninja ( 20 points )	Kill an opponent that has the Ninja achievement.
Go Ape Shiv ( 20 points )	Kill an enraged, berserk Brute by melee, any level, any difficulty.
Gravemind ( 30 points )	Complete Gravemind at Normal, Heroic, or Legendary.
Hero ( 50 points )	Complete the game on Heroic difficulty.
High Charity ( 30 points )	Complete High Charity at Normal, Heroic, or Legendary.
Hired Gun ( 20 points )	Kill an opponent who has the Legend achievement.
Killing Spree ( 20 points )	Kill 5 opponents in a row in the same game, without dying.
Killtacular ( 20 points )	Kill 4 opponents within 4 seconds.
King of the Scarab ( 20 points )	Acquire the Scarab gun on the Metropolis level, any difficulty.
Legend ( 50 points )	Complete the game on Legendary difficulty.
Metropolis ( 30 points )	Complete Metropolis at Normal, Heroic, or Legendary.
Ninja ( 20 points )	In a non-team game, kill 5 people by melee, from behind.
Oracle ( 30 points )	Complete The Oracle at Normal, Heroic, or Legendary.
Outskirts ( 30 points )	Complete Outskirts at Normal, Heroic, or Legendary.
Quarantine Zone ( 30 points )	Complete Quarantine Zone at Normal, Heroic, or Legendary.
Rainman ( 25 points )	Play every available game variant, with at least 3 other players, to the end of each game.
Regret ( 30 points )	Complete Regret at Normal, Heroic, or Legendary.
Roadkill ( 10 points )	Run over, hit and kill an opponent with a vehicle.
Running Riot ( 20 points )	Kill 10 opponents in a row in the same game, without dying.
Sacred Icon ( 30 points )	Complete Sacred Icon at Normal, Heroic, or Legendary.
Silent but Deadly ( 20 points )	Kill 7 opponents from behind in a row without being spotted, any level, any difficulty.
Skewer Stopper ( 20 points )	Kill the sword carrier after they kill 5 or more times in a row with the sword.
Sniper Kill ( 10 points )	Kill an opponent with the sniper rifle or the beam rifle.
Stick It ( 5 points )	Stick an opponent with a plasma grenade and blow them up.
The Great Journey ( 30 points )	Complete The Great Journey at Normal, Heroic, or Legendary.
Triple Kill ( 20 points )	Kill 3 opponents within 4 seconds.
The Arbiter ( 30 points )	Complete The Arbiter at Normal, Heroic, or Legendary.
Uprising ( 30 points )	Complete Uprising at Normal, Heroic, or Legendary.
Vigilante ( 10 points )	Stop a Killing Spree of another player.
Violent Cartographer ( 25 points )	Play every available default map and stay in each game until it's over.
Warrior ( 100 points )	Complete the game on Normal difficulty.

If you choose different difficulties in Campaign mode on a level with an opening sequence, the cut-scenes will have different actions or different sentences. For example, in Metropolis John says different sentences under other difficulties. On Delta Halo, watch the grunt next to the Jackal and Turret. It will play with fire under Legendary or a doll of itself under Heroic.

This trick requires at least two people. First, flip a vehicle (Wraith recommended). Have your partner sit on the vehicle, then flip it. It should give you good height and good range. This works well if you have an energy sword out and there is an enemy close to you.

In any level with a force field shield (for example, Gravemind), melee the shield to hear a dead Jackal as if you cut it with a sword.

Find a door that doesn't open (must be inside and a small door). Slowly back up to the door and jump then crouch on the door. Now the flood will not be able to harm you.

Go to any level in either co-op or single player mode. Make sure that there are more than three of your men that you can kill. Kill either two or three, and all of your remaining men in the area should say something like "You killed him" and start shooting at you. Note: They will stop shooting when you kill enough enemies. They should forgive you and then become your allies again.

In multi-player-mode, turn on all vehicles and go to a place with open space. Get in a Ghost and find a tank. Go towards it as fast as you can. You will flip and do different things, depending on where you hit the tank.

Choose a level with the yellowish glowing boxes that blow up (Headlong or Waterworks recommended). Get in a ghost and boost into one of the tiny boxes and you will be sent flying. You can repeat this as many times as desired, or you can pile the boxes and be blown sky high.

Go to any level (Metropolis recommended, when you have to get on the Scarab). Back the Ghost up to the side of the bridge. It will start hopping up and down.

Go to a mode such as multi-player or campaign and get the Brute shot. Go to a wide area so that you can see it. Shoot all four of your grenades into the air. The grenades will come down like a meteor shower.

On any map that has heavy vehicles, put a Scorpion tank in it. Have a shotgun out. Go on the Scorpion tank and stand on the middle of the nose. You can stand in the middle of the gun. Fire your shotgun at about the timing which a Scorpion tank cannon would fire. Note: This works best when you are using a brown or sage colored Spartan. Opponents should see you, and if they check out the tank, blow them to bits.

On the level " the Outskirts" you will make your way through the level until you pass a area known as "Zanzibar Hotel" once passing this if you continue forward into the drop area where the phantom drops a load of covenant look down to your right. You will see a small little area under you that has a few potted plants in it. This is where the Invincible Warthog will spawn.

Continue through the level until reaching the last possible checkpoint in the level. (Typically I just like going to the final tunnel), once doing this go back to the previously mentioned area, and you should find a warthog you might need some grenades to get it, but most of the time you can just drive it out over a little bench looking thing.

Keep pressing [Jump] to jump faster.

Play in co-op mode in any level (Outskirts recommended). Have one player jump on top of the other. Then, have the player on top jump again and keep pressing [Jump]. Then, have the lower player jump immediately after the first player. If done correctly, the top player should land on the lower one (who is in mid-air), then jump again. You can use this to get on top on locations you cannot reach normally.

This trick can only be done in co-op or multi-player mode. Get next to the structure that you want to climb. Have a player take out his plasma sword. Have the other player stand on top and keep jumping in the direction of what you are climbing. While player two is jumping, have player one look up and use the "Sword cancel" trick. If done correctly, you can reach any area in the game as long as you do not exceed the invisible barrier.

On any co-op or multi-player level, have you and a partner find an area where you need some kind of boost to get to a higher location. Have your partner crouch under that area. Jump on your partner, then jump (without falling off your partner) as your partner un-crouches. This should give you a big enough boost to let you jump up to your destination.

You can jump higher by simultaneously pressing [Crouch] while in the air after a jump.

All of the oddballs are the skull of Captain Keyes from the original Halo.

Create a profile and customize his appearance as follows.

Emblem Background: Vertical Gradient
Emblem Foreground: Grunt Head
Player Model: Elite
Primary Color: Orange
Primary Emblem Color: Orange
Secondary Color: Violet
Secondary Emblem Color: Violet

On the Metropolis level, at a certain part a building will be named "TTERRAB INDUSTRIES". "TTERRAB" spelled backwards is "Barrett", the last name of one of the game's developers.

Commit suicide five times consecutively and you will respawn at the checkpoint before your most recent one.

Line your Banshee up with a wall so that the wing you want to scrape off is opposite to the wall. Barrel roll into the wall and the wing will hit the wall. This will require a few attempts to completely scrape the wing off and will drain your shield (if available) on every hit. Another way is to simply fly at a corner pointing in the direction you are going, or a pillar. Make sure your wing is the only thing that hits the wall or pillar. Like the first method, this may take a few attempts and will drain your shield.

In the Limited Collector's Edition of the game, there is the special booklet called "Conversations From The Universe". In the booklet on page 7, there is an extremely difficult to read text from the Prophet of Truth to the Prophet of Mercy concerning the Prophet of Regret. The following is the translation (the number of words in each line is equal to the number of words in each line in the booklet, except for the words in parentheses):

To thine own eyes, Prophet of Mercy

Dearest Brother,

I hope this finds you well. My sorrow and anger precedes me with regard to the atrocity and heresy at Halo. We shall avenge this destruction with some of our own. Work proceeds apace on our battle plan. The Sangheili (Elites) will do what is asked of them, and the Jiralhanae (Brutes) will show the humans what our strength looks like at close quarters.

But this message concerns neither the planning nor the discovery of the Human homeworld. Rather I question Brother Regret's suitability for this great purpose.

I am aware of his tenacity and ambition, but I believe his youth and reckless reaching may prove to be grave risks to the perfection of this undertaking. You have noted his rashness in the past, and yet neither of us has acted.

I suggest that we continue as planned, but we would both do well to pay mind to Brother Regret, and provide wisdom and guidance as needed. This matter is too important to be left to inexperienced hands. Piety is no substitute for wisdom.

Perhaps I worry too much. You know that I embrace caution, but cannot have inexperience or arrogance at this great juncture.

Be pure, be vigilant, and never rest.

By my own hand

Prophet of Truth

Choose a level with high ledges or windows (Lockout recommended). Perform the suicide shot while running towards the ledge or window. You will kill yourself and do a frontflip out of the window and fall to the ground or into the abyss. Note: This does not work in campaign mode.