- Flyable Pelican and Phantom Easter Egg in 'New Alexandria' mission
Begin the 'New Alexandria' mission from the beginning, and progress until the part where you have to defend the ONI Tower near the end of the mission. Notice: Get a jetpack from Club Errera when you destroy the jammer or behind the Jammer in the hospital. Do not die or the jetpack will be lost. After destroying all the jammers and when told to defend ONI Tower, fly over to Club Errera in a Falcon, and follow the procedures in the video.




- Auto fast forward in Theater mode
Keep pushed RT, press Begin, release RT, then push Begin again to automatically fast forward your replay until you pause it or press RT.

- Easy 'Blaze Of Glory', 'Crowd Control', 'Firebeginer', 'Game, Set, Match', and 'Heat In The Pipe' achievements
Select Firefight Classic mode. Go to 'Game Options', and choose the 'Custom Skull' settings under the 'Firefight' settings. Select either the red, blue, or yellow skull to edit. Go to 'Spartan Traits', and choose the 'Invulnerable' option under the 'Shields And Health' option. Select '4x Over-shields' under the 'Shield Multiplier' option. Enable 'Immune To Head-shots' and 'Immune To Assassinations'. Go back one screen, and set the damage modifier to 300%, melee modifier to 300%, and infinite ammo to bottomless clip under the 'Weapons And Damage' option. Go back two screens, and choose 'Wave Traits' under the same skull settings. Set the damage modifier to 0%, damage resistance to 10%, vision to near sighted, hearing to deaf, and luck to unlucky. Return to the 'Firefight' settings menu. Under the 'Wave Properties' option, make sure the skull you customized (red, blue, or yellow) is activated in each wave and the bonus wave. Then, save your game type. Change the difficulty to Legendary, and begin the game. You will now be practically invincible and can kill the Covenant easily. You should get the 'Blaze Of Glory', 'Crowd Control', 'Firebeginer', 'Game, Set, Match', and 'Heat In The Pipe' achievements within approximately three hours, depending on your skill level.


Notice: To make this much easier, use the above trick; however, in 'Wave Properties' under the 'Skulls' menu, activate all skulls to every wave including the bonus wave. Then, select 'Bonus Wave', and set all the enemies to 'Hunters'. Set the timer to two minutes (because Hunters give the most points for killing them). On the first page, set the 'Wave Limit' and 'Time Limit' both to 'Unlimited'. Set the 'Game Difficulty' to 'Legendary', and begin the game. Once the game begins, kill enemies until you find a good explosive weapon (concussion rifle recommended). Then, begin using that weapon, and fight off all waves. Once the bonus round begins, there will be three Hunters spawning each second non-stop until the map cannot spawn any more of them. If one of them gets killed, it will immediately get replaced by another one. Keep pressing RT rapidly to quickly take them out so they can be replaced fast. You can quickly kill more of them and will be rewarded with lots of points. Repeat this process to get approximately one million points in just two sets, which requires about 40 minutes.

- Remove level boundary Easter Egg in 'The Package' mission

- Data Pad locations
Search the indicated locations on the listed difficulty to find all 19 Data Pads:





- Lone Wolf bonus mission
Successfully complete the game on the Normal difficulty or higher to play the Lone Wolf bonus mission after the credits end.

- Lower your weapon
While in a local game, click the Right Analog-stick and keep pushed Down + [Reload] + [Grenade Switch].

- Invincibility and permanent Armor Lock
This trick requires two players. Enter Forge mode, create an Armor Lock ability, then drop it on player two. Next, create another Armor Lock ability and press B. Then, go to delete all of these from the map. Click it, and hover over 'Yes'. Have player two go into Armor Lock. While they are in Armor Lock, select 'Yes' at the 'Delete all of these from map' message. Player two will now be invincible, and can move around in permanent Armor Lock. You can still use other equipment, such as Evade.

- Alternate Club Errera music Easter Egg in 'New Alexandria' mission
When you reach Club Errera in the 'New Alexandria' mission, return to the hospital. Fly to one of the ledges below the normal entrance. You should see a green light at the correct ledge. Activate it, and go back to Club Errera. When you walk in, the song 'Never Surrender' will be playing. To change the music again, return to your Falcon, and fly to the roof of Club Errera. Activate the switch located there to hear the 'Siege Of Madrigal' song at Club Errera. Notice: Go to Club Errera after it is cleared to see a Brute DJ and bartender, and Grunts dancing to the music.




- Reducing fall damage
Go into a crouch approximately two thirds of the way down from a high fall.

- Achievements
Do the following things to obtain the corresponding Gamerscore points:

5 Points
Knife To A Gun Fight	As an Elite, killed 5 Spartan players in Matchmaking.
What's A Killing Spree?	Gained a Killing Spree in multiplayer Matchmaking.
KEEP IT CLEAN	Killed 7 Moa during the 2nd mission of the Campaign.
Be My Be victorious ingman Anytime	Let a teammate spawn on you 5 times in an Invasion Matchmaking game.
A Storage Solution	Used the File Browser to upload a file to your File Share.
Cool File, Bro	Recommended a file to someone.
Doctor, Doctor	Used a Health Pack to replenish life after taking body damage.
10 Points
Send Me Out... With A Bang	Finishd the 10th mission on Normal or harder.
I Didn't Train To Be A Pilot	Killed 3 of the anti-aircraft batteries during the 8th mission.
I See You Favour A .45	Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.
A Spoonful Of Blamite	Killed 10 enemies in Firefight or Campaign with a supercombine explosion.
This Is Not Your Grave	Finishd the 9th mission on Normal or harder.
To War	Finishd the 5th mission on Normal or harder.
I Need A Weapon	Finishd the 4th mission on Normal or harder.
Dust And Echoes	Finishd the 8th mission on Normal or harder.
Into The Howling Dark	Finishd the 7th mission on Normal or harder.
Yes, Sensei	Gained a First Strike Medal in a Matchmaking game.
We're Just Getting Begined	Finishd the 2nd mission on Normal or harder.
An Elegant Weapon	Killed 10 enemies in a Firefight or Campaign session with the DMR.
You Flew Pretty Good	Finishd the 6th mission on Normal or harder.
Firebeginer	Realized 50,000 points in a Firefight game.
Make It Drizzle	Purchased an item from the Armory.
A New Challenger	Finishd all of the Daily Challenges in a given day.
Lemme Improve Ya	Advanced a Commendation to a Silver state.
That's A Knife	Performed an Assassination on an enemy.
Swap Meet	Traded weapons with an AI ally in Campaign.
Crowd Control	Gained a Killionaire medal in Firefight.
Make It Rain	Purchased an item from the Armory that required the rank of Lt. Colonel.
Protocol Dictates Action	Finishd the 3rd mission on Normal or harder.
Realize Attack	Realized 15,000 points in Realize Attack Firefight Matchmaking.
Skunked	Won a game of Invasion in the 1st phase.
One Down, 51 To Go	Finishd a Weekly Challenge.
15 Points
The Begin Of Something	Reached the rank of Corporal in the UNSC.
25 Points
An Honor Serving	Reached the rank of Captain in the UNSC.
Banshees, Fast And Low	Hijacked a Banshee during the Reach Campaign.
Wake Up Buttercup	Destroyed the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
The Soldier We Need You To Be	Finishd the Campaign on Normal difficulty.
Blaze Of Glory	Realized 200,000 points in a Firefight game.
Two Corpses In One Grave	Killed 2 vehicles at once with the Target Locator in the 3rd mission.
Game, Set, Match	Finishd a Firefight set on Legendary without dying.
Lucky Me	Gained a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
They've Always Been Faster	Cleared the 2nd mission without setting foot in a drivable vehicle.
Tank Clears Everything	Finished the 9th mission on Legendary with the Scorpion intact.
If They Came To Hear Me Beg	Performed an Assassination against an Elite to survive a fall that would've been fatal.
Your Heresy Will Stay Your Feet	Killed the Elite Zealot before he escaped during the 5th mission.
50 Points
Folks Need Heroes...	Finishd the Campaign on Heroic difficulty.
75 Points
Heat In The Pipe	Realized 1,000,000 points in a Firefight game.
125 Points
Gods Must Be Strong	Finishd the Campaign on Legendary difficulty.
150 Points
A Monument To All Your Sins	Finishd every mission in Halo

13 Points
You Blew It Up!	Noble 1
20 Points
Offensive Driver	Noble 1
25 Points
Poppin' & Lockin'	Noble 1
42 Points
You Ate All the Chips	Noble 1
50 Points
Cross-Mappin'	Noble 1
Totally Worth It	Noble 1
Both Barrels	Noble 1

30 Points
Return to Sender	Successfully return two flags in a matchmade CTF game.
45 Points
Crackin' Skulls	Kill 3 players with the Oddball in a matchmade Oddball game.
75 Points
Candy from a Baby	Capture two flags from an enemy capture zone in a matchmade Stockpile game.

- Hidden Tribute Room Easter Egg in 'The Package' mission
Play 'The Package' mission with two players on the Legendary difficulty. Begin at Rally Point Bravo, and continue until Dr. Halsey announces that her lab is open. Do not enter the lab or use the panel on the door to end the mission. Get an unmarked Jet Pack from the wall at the northern side of the lab entrance area. Have one player remain in a safe location, and have the other player fly to the far eastern line of buildings. Run up the ramp, and turn left (north). Notice the fenced-off area on the upper level lines the out-of-bounds region to the northeast. Drop off the northeastern corner, and carefully move towards the rocky out-of-bounds area below. Do not touch it. Hover above it, and search for a panel with a green light which you can access on a girder. Push X to activate it. This opens a door on the north side of Halsey's lab entrance. Some Elites with Energy Swords will appear from there. Fly over them or run a Ghost through them, then enter the open door. You will be transported to a hallway. Follow the hallway to the lab area, where you can see hidden features including old Halo artwork and data panels with joke text.




- Easy credits
Select Firefight mode, then go to 'Game Options', and choose the 'Spartan Settings'. Select the 'Base Traits' menu, and choose the 'Shields And Health' option. Change the 'Damage Resistance' to 'Invulnerable'. Then, set the difficulty to Legendary, and begin a match. Stand near enemies, and let them attack you. You will get approximately ten credits per minute by doing this.


Set up a game of Forge with the timer set for one hour, and then end the game. You will get a total of 3,654 credits if you win the game. After reaching the 'Captain' rank, you will get just over 4,100 credits for an hour long game if you win. Repeat this process as many times as desired.


Notice: This may only work on the unpatched version of the game. Go to the Forge, then go to the Forge World map. Let your Spartan or Elite just stand there for as long as desired. You will get credits for the amount of time you are in the level. When ready, leave the game, and you will get credits for doing nothing. You can get at least 3,000 credits for three to four hours of doing this. Notice: You can delete all patches for the game by using the 'Clear hard drive cache' code for the Xbox 360.

- Quickly scale objects
Find a surface that is slanted slightly; not perfectly vertical, but not horizontal. You can quickly scale the object by using Evade. You can also jump to it from several stories up; thus, surviving a fall. For example, in 'Forge World', you can jump from the high mountains located to the left of the waterfall to the slightly tilted rocks below. Notice: Your speed also affects the chances of you dying. Hitting these rocks will slow you down, and are tilted so you do not technically hit the ground. Use Evade to get to small spaces, and quickly scale objects.

- Haunted Helmet
Purchase every single helmet and helmet permutation to unlock a bonus helmet called the 'Haunted Helmet'. It is a helmet with an open visor that shows your character's face as a skull.

- Avatar Awards
Successfully complete the indicated task to unlock the corresponding Avatar Award:

Hoodie	Play a full game of any type in the Halo
Carter's helmet	Successfully complete a campaign mission on the Legendary difficulty without dying.
Emile's helmet	Get a Bulltrue medal in Multiplayer or Firefight Matchmaking mode.
Jun's helmet	Kill 100 enemies sequentially without dying in Campaign or Firefight mode.
Jorge's helmet	Get a Killtacular in Multiplayer Matchmaking mode.
Kat's helmet	Avenge a teammate's death in Multiplayer Matchmaking mode.

- Faster melee attacks
Push RB, then quickly push X + RB.

- Change object colors
You can change the colors of certain objects. While keep pusheding an object, press X and highlight 'Change object color'. Only the Mongoose changes color; all other vehicles do not.

- Secret Reach Racer mini-game Easter Egg in 'Oni: Sword Base' mission
Play the 'Oni: Sword Base' mission with two players in a co-op match on the Normal difficulty or higher. There are two hidden switches that are marked as 'doors' that you can open. Both of them can be found after Rally Point Alpha (where you must destroy the Wraiths). The first switch is on the coast of the water southeast of the buildings with a pair of switches that you must activate. The second switch is on some rocks near the frozen waterfall. The message 'Keep pushed B to open door' will appear when you are in the correct location. Notice: Reload your weapon before trying to find it. The second switch is past the AA cannon in the next area. Search for the pile of rocks with some trees on it that overlook the walled complex on the ice that is below the area. With both players standing at those locations, press B simultaneously. The message 'Current Objective: Reach Racer' will appear. You will be transported to the Oni: Sword Base with two Gauss Cannon Warthogs. You can race the other player through a course marked by red waypoints. The losing Warthog will explode at the end of the race.




- Master Chief Easter Egg in 'The Pillar Of Autumn' mission
Select the 'The Pillar Of Autumn' mission. Set the difficulty to Normal, and begin at Rally Point Bravo. Once you take control over the large laser cannon, fight off all the Phantoms until a cutscene featuring a Covenant Battle Cruiser exploding and The Pillar Of Autumn begining to take off. When the cutscene begins, keep pushed the Right Analog-stick Right. At the part where the Pelican is coming inside the ship, your camera will automatically move to the right, and you will see Master Chief in Cryo sleep, inside a Cryo Tube wearing his Mark V armor.




- Easy Carter's helmet avatar
You normally have to complete a level on the Legendary difficulty without dying to unlock Carter's helmet avatar. However, you can instead play up until just before the end of a level, and select 'Save and Quit' after a checkpoint. Then, resume the game, and complete the rest of the level without dying to unlock Carter's helmet avatar.

- Special nameplates
Successfully complete the indicated task to unlock the corresponding nameplate for Multiplayer mode. To activate it, log into Bungie.net, select 'Account', 'Game Settings', then 'Nameplates'.

MJOLNIR Mk VI helmet logo	Unlock any four of the Halo PC, Halo 2, Halo 3, Halo 3
Assault rifle	Played the Halo
Bungie	Activate blue flames through the Bungie Mobile iPhone/iPod app.
Halo 2 logo	Played Halo 2 on Xbox Live before April 15, 2010.
Marathon Durandal symbol	Have Marathon Durandal in your recently played games list, and login at Bungie.net.
Halo 3 logo	Play any campaign level in Halo 3 on Xbox Live.
Star	Activate through the Bungie Mobile iPhone/iPod app.
ODST logo	Play Halo 3
Original Halo logo	Register your Halo PC product code at Bungie.net.
HALO	Unlock the original Halo logo, Halo 2 logo, and Halo 3 logo nameplates.
Designated Marksman Rifle (DMR)	Subscribe to the Bungie Pro hosting service.
The Septagon symbol	Join Bungie.net, and login with your Gamertag's email address.

- 7 references
Successfully complete 'The Pillar Of Autumn' mission, and wait for the credits to end. The loading object will turn into a different shape. It is easy to miss, but it is a '7'. This is a reference to Bungie's favorite number.


The highest existing rank is 'Legend', but Bungie added 7 additional ranks, which are Mythic, Noble, Eclipse, Nova, Forerunner, Reclaimer, and Inheritor. This is another reference to Bungie's favorite number.

- Easy 'Banshees, Fast And Low' achievement
In the 'Exodus' mission, go to the final rally point. Two Falcons will land there. Quickly dispatch the Marines when they land, but seek cover. The Falcon gunners will try to kill you. Run to a gunner, and the message 'Hijack enemy vehicle' will appear. Select it to get the 'Banshees, Fast And Low' achievement.

- Leave boundary in Boneyard map (beta version)
In the Boneyard map on the ship, there is a staircase with two flights that leads from the ground to the ship. This staircase is on the right side when you are looking at the Elite spawn on Invasion. Walk onto the upper flight of stairs, and look at the fence keeping you from falling off the ship. Jump to the lower part of the fence, and turn to the open area. Jump onto the part of the ship that hangs over the edge to leave the level boundary. If there is only one person on the console and you look at the indicator of where you are (bulkheads, under the ship, bridge, etc.), it will read 'out of bounds'. This is a very good location to pick off the Elites in Invasion with a DMR. Notice: You can only walk so far over before you fall off the ship and die.

- Easy Jun's helmet Avatar Award
To unlock Jun's helmet Avatar Award, you must kill 100 opponents sequentially without dying in either Campaign or Firefight mode. To easily do this, go to Firefight mode, and select the 'Game Settings' option. Choose 'Spartan Settings', and go to 'Shield Damage And Resistance'. Set the 'Shield Damage Resistance' to 'Invulnerable'. By doing this, you will never die, no matter how much damage you take. Push B, and go to the 'Weapon' option. Set the 'Infinite Ammo' option to 'Bottomless Clip'. By doing this, you will never have to reload your weapons and plasma weapons will never overheat. Play Firefight mode on any difficulty. You can easily kill 100 enemies sequentially without dying. Once you unlock Jun's helmet Avatar Award, you can use the helmet by going to 'Customize Avatar' and selecting 'Avatar Awards'.

- Easy 'If They Came To Hear Me Beg' achievement
Load 'The Pillar Of Autumn' mission, and then follow the steps shown in the video. It might take a couple of tries, but you should eventually get the 'If They Came To Hear Me Beg' achievement with the right timing. You get a checkpoint right before the jump, so if you miss, just reload your last checkpoint, and keep trying until you get the achievement.




- Auto fire
While keep pusheding an automatic weapon, crouch and press Select for the gun to fire repeatedly.

- Ending sequence


- Ranks
Gain the indicated amount of credits to reach the corresponding rank:

General	2,000,000 credits (+240,000 credits)
Captain Grade 2	256,000 credits (+23,000 credits)
Brigadier Grade 2	1,640,000 credits (+120,000 credits)
Mythic	5,650,000 credits (+1,050,000 credits)
Major Grade 1	350,000 credits (+25,000 credits)
Lt. Colonel	450,000 credits (+50,000 credits)
Private	7,500 credits
Commander	600,000 credits (+60,000 credits)
Corporal Grade 1	15,000 credits (+5,000 credits)
Commander Grade 3	750,000 (+50,000 credits)
Colonel Grade 2	1,070,000 credits (+110,000 credits)
General Grade 3	2,500,000 credits (+150,000 credits)
Captain Grade 1	233,000 credits (+23,000 credits)
Warrant Officer Grade 1	78,000 credits (+33,000 credits)
Lt. Colonel Grade 3	540,000 credits (+30,000 credits)
Warrant Officer	45,000 credits (+12,500 credits)
Major	325,000 credits (+46,000 credits)
Captain	210,000 credits (+66,000 credits)
Warrant Officer Grade 3	144,000 credits (+33000 credits)
Corporal	10,000 credits (+2,500 credits)
Brigadier	1,400,000 credits (+220,000 credits)
Legend	4,600,000 credits (+900,000 credits)
Sergeant Grade 1	26,250 credits (+6,250 credits)
Colonel	850,000 credits (+100,000 credits)
Colonel Grade 3	1,180,000 credits (+110,000 credits)
Warrant Officer Grade 2	111,000 credits (+33,000 credits)
Field Marshall	3,000,000 credits (+350,000 credits)
Sergeant	20,000 credits (+5,000 credits)
General Grade 2	2,350,000 credits (+150,000 credits)
Nova	11,000,000 credits (+2,500,000 credits)
Eclipse	8,500,000 credits (+1,500,000 credits)
Reclaimer	16,500,000 credits (+3,500,000 credits)
Noble	7,000,000 credits (+1,350,000 credits)
Commander Grade 2	700,000 credits (+50,000 credits)
General Grade 4	2,650,000 credits (+150,000 credits)
Colonel Grade 1	960,000 credits (+110,000 credits)
Brigadier Grade 3	1,760,000 credits (+120,000 credits)
Forerunner	13,000,000 credits (+2,000,000 credits)
Hero	3,700,000 credits (+700,000 credits)
Lt. Colonel Grade 2	510,000 credits (+30,000 credits)
Captain Grade 3	279,000 credits (+23,000 credits)
Sergeant Grade 2	32,500 credits (+6,250 credits)
Lt. Colonel Grade 1	480,000 credits (+30,000 credits)
General Grade 1	2,200,000 credits (+200,000 credits)
Major Grade 3	400,000 credits (+25,000 credits)
Commander Grade 1	650,000 credits (+50,000 credits)
Major Grade 2	375,000 credits (+25,000 credits)
Brigadier Grade 1	1,520,000 credits (+120,000 credits)
Inheritor	20,000,000 credits (+3,500,000 credits)

- Easy Emile's helmet Avatar Award
Go to 'Matchmaking', select 'Community', and choose 'Grifball'. It only features gravity hammers and energy swords, allowing the Bulltrue medal to be easily earned.

- Programmer's face
In Forge World, select any map. Walk to the edge of the hangar, and zoom into the background with a weapon, where you see Halo orbiting. Look closely at the base of the ring to see the face of Chris Carney in the clouds of the Halo.