Halo 2 Easter Eggs Cheats

Hidden DVD message:
Insert the Halo 2 Bonus DVD from the Collectors Edition. Remain idle at the main menu. The Marine will begin to threaten you very comically for not hitting play. He will go through three different routines before it repeats.

Blood Gulch reference:
Go to multi-player mode and scroll to the Coagulation map. Read the description. It will describe "a bloody gulch".

Assassins Mode
You can find a skull similar to the one that activates blind mode if you Start on "regret". After the first lift ride (before the first underwater elevator), grenade jump from the front awning of the lift to the ledge in front of you (the one with two turrets).

Grenade jump AGAIN onto the next ledge.

Make your way to the back of the building. On Easy, you'll only find the skull. On Legendary, however, 2 invisible Elites carrying swords just shake their heads wildly, ignoring you completely.
User Cheat by supportmytroopa**

Black Eye Mode
In the level "The Great Journey"

It is on top of the contol room where Johnson blows up the door.

Shield won't regenarate if picked up.
User Cheat by Navy_Seal

Blind Mode
In the beginning of Outskirts jump on top of the light on top of the door with a crouch jump, then jump to the left platform. Turn to your left and go down the long dark corridor and pick up the skull; it will say blind and your screen will flash black for a while. In this mode you can not see your weapon, body, shields, ammo, or radar. To get rid of this feature use the following method: 1. Turn off your XBOX or Save and Quit. 2. Go to Campaign and select level and choose Cairo Station. 3. Skip the cinematics and then Save and Quit. 4. Go Outskirt and your hud is back.
User Cheat by Navy_Seal

Catch Mode
Upon getting out of the sewers (Tunnel), there is a big area and 2 ghosts, kill every thing first, then go to the middle of it where u see a arc that leads up onto a building, throw a grenade down and jump by it to get enough height to start climbing it. When you get to the top take a left and hug the wall around the structure and the skull will be there.

It says Catch

Angry Mode
When you are the Master Chief trying to recover the index from the Prophet of Truth on the Covenant Holy City go until you reach the first outdoor area with dirt and vegetation. Take a right as you enter this room and run up to the wall past the gravity lift that leads up to the sniper point. Get on top of the wall by going up the dirt mound on your left. Follow the wall until you reach the floating skull called "Angry".


Ghost Mode
After the outdoor area with all the ghosts and grunts, there is an 'L' shaped room that is seen throughout the level. It is right after the armory room that is full of covenant and human weapons. Grenade jump using a jacked ghost up to the rafters and it's up there.

Grunts Birthday Party Mode
In the level Arbiter on Legendary. Once you get to the first banshee section, fly immediately straight down all the way to the bottom of the map. In one of the cracks where the large cylinders connect to the station. There will be a circle of grunts dancing around a skull. When you pick up the skull; it will say Grunt Birthday Party on the screen. Now when you kill a enemy with a projectile weapon, they will blow up like a plasma grenade was stuck to them.
User Cheat by Navy_Seal

Hidden art gallery in the Limited Edition DVD
In the main menu of the bonus DVD, hold left for 10 seconds.Then you will be able to see the hidden art gallery.

Iron Mode
On the last Master Chief Level, on Legendary Difficulty, when you enter the final Gravity Lift, look up. A skull will pass through you extemely quickly so you must start holding X a bit before you actually pass it to grab hold of it. Once you grab the Iron Skull, Iron Mode will be activated.

Mythic Mode
In "Sacred Icon" there is a semi outdoor area which has the same type of area right next to it. There is a large sentinal in front of each one. Go past this area and down the piston and you'll be in a vary dark and dank flood infested area. There's a stack of 6 or 7 boxes as you enter the room. Use them to jump up to the landing above. There are a handful of alcoves on your right hand side. The skull is in the third alcove, floating above a dead human flood. When you are in this mode flood are invincible when driving vehicles.

Posters at the Old Mambassa Crash landing *after Cairo*
After you crash land on Old Mambassa, you can see posters all around with the Master Chief from the demo and some grunt posters.

Sputnik Mode
At the start of "Quarantine Zone" turn directly around, and you should see a tunnel. Head down the tunnel and go straight until you exit it. Go straight across the open area, and you'll come across a broken pipe tunnel on your right. Straight in front of you is a small ledge running across the wall, above the green pit. Carefully get onto that small ledge and walk all the way to the end of the ledge to find the Sputnik skull. In this mode explosion force and melee force is greater.

Rocket Launcher:
This is an easter egg found on almost any level.  If there is a rocket launcher laying on the ground, zoom in on it and you will see a message.  It will say, ATTENTION  HOLD LIKE THIS and there will be a picture of a guy showing you how to properly hold a rocket launcher.
User Cheat by Navy_Seal

Hat glitch at Cairo Station:
At the beginning, go down the stares where there is a stock pile of weapons and ammo on the boxes. Beside the weapons and ammo boxes is a box with a hat on it. Hit the box with the hat on it until it moves away and the hat stays in the same place.
User Cheat by bfrazburg

    Hidden message and sword on Outskirts:
Difficulty: VERY EASY BUT CONFUSING
Where: In halo 2 on the level Outskirts (Campaign) 
What to do: At the first part of the level once you kill off all the covenant and the pelican says he found a good LZ (Landing Zone) on the other side of some buildings Sarge should say,\"Someone get a satchel on that gate\".Then big, scary hunter come. Kill them and move on. At the spot where there are jackels on the other side and one sniper behind them kill all the jackels and turn that corner, you should now be in a long alley with jackel snipers on the very far side and some drones. When you kill all the covenant look to the right side where you should a slightly lifted platform off the ground. There should be an explosive on this that looks like a purple chair. Right beside the \"purple chair\" should be a big box on the wall with pipes across it, jump onto this and then jump onto the roof with that looks like it has rusted squares on it. Jump up to roof slightly above you, there shoulb be vents on it and a force field that does not allow you to go any higher. When facing the force field look to your left and walk over to that wall. Jump onto the \"rusted thing\" above the brown window. Face the wall and turn left. Jump to the \"rusted thing\" above that brown window. Then go to the edge of that and jump to the grayish metal thing connecting that building to the one across the street. Walk along the wall on that metal thing to the other side. Then jump into the broken hole in the wall. You should find a sword stabbed in the ground and blood in a spot with rocks in the blood spelling out \"REX\".If
User Cheat by msdvolvet

Fireworks:
Throw two plasma grenades in the exact same spot then quickly look up in the air and you will see a blue explosion
User Cheat by krazykristoffer

Blue Screen of Death Easter Egg:
On the multiplayer map Zanzibar, if you go to the switch that opens the gate and press it, the computer monitor will show the dreaded blue screen. Zoom in to the blue screen and you will find some extremely hilarious text, including \'If system does not restart, scream at top of lungs and pound on keypad\'
User Cheat by charlie_wood2

Outskirts Glitch:
On the level outskirts, on legendary difficulty, (i haven\'t tried any other difficulty), listen to johnson when he says, \"Here they come! Left side!\" Go through the alley where all of the covenant are flooding out from. Once you kill them all, or if they\'re not there, there should be a mound of dirt in the corner to the left, get on the mound and crouch jump onto the little platform, then turn around and there should be another platform, jump onto that one and got to the right, you should be on top of the building where all of the snipers shoot from. Keep going until you see a little platform that lets you got to the left, jump on it, and when you are on the other side, you should be where johnson gets onto the pelican, don\'t go down there, there should be a long bridge thing in front of you or to the left, crouch jump just to make sure you\'re on it, then walk all of the way to the end, when you reach the end you be stopped by an invisible wall, just keep trying to walk through it you will eventually get out to a blank space in the game if you turn around you can see what i mean! (This only works if you have activated blind mode!)
User Cheat by halo2

Howard Dean scream:
At some point in the game when you are playing as Master Chief, one of you allies will do the Howard Dean scream while they are attacking.

Secret coded message:
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 ?ckless reaching
may prove to be grave risks to the per?ction
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

Get a soccer ball:
You must go around the street level, then go behind the wall and your a soccer chief. Go have some fun.
User Cheat by KingdaKaCRAZY456

Get into Pelican Cockpit (use less):
The Pelican on the beach in front of the Zanzibar hotel. Go inside the the pelican and walk into the  cockpit door and you will be in the cockpit you will be stuck. (be warned.)
User Cheat by 123456789rl

Change the Zanzibar \"No Swimming\" sign:
This is another glitch. Go to your menu on X-Box and change your date. Make the month 7 and day 7 for a hilarious sign. Also try holiday dates like 12 31 for Christmas and 8 31 for Halloween. These signs are really cool.
User Cheat by 19nickel67

Flipping phantom:
When you first start the arbiter level go straight south west to a small arch looking structure, go inside it, then look to your left, and straight down. You will see a phantom crash into the wall and flip around. If it goes off the screen zoom in.
User Cheat by mikeygluey12

View a programmer:
In the multiplayer level containment, you can see the face of a game developer of halo if you take a sniper rifle and fly a banshee up to a high position, look at where halo goes up into the sky and right where the shadow hits halo use the scope, you should be able to see the face of a chris smiling, Chris is a game developer for halo 2.
User Cheat by gfranzen

Rooster Teeth Easter Egg (Map Pack Level):
On the new multiplayer level \'Turf\' (found on the map pack), Check the vending machines. The blue vending machine has a rooster\'s silhouette on it and the red one has a pair of false teeth. These are the symbols of Rooster Teeth, creator of machinma series \'Red vs Blue\'
User Cheat by charlie_wood2

Halo 2 Official Website

Halo 2 Review - 1Up

Halo 2 Review - Adrenaline Vault

Halo 2 Review - Boomtown

This first-person shooter , developed by Bungie Software, is scheduled to be released on Nov. 8, 2004.