Halo 3 (X360)

Halo 3 cheats:

Armor parts
Complete the indicated task in Campaign mode to unlock the corresponding armor part in Multi-player mode.

Elite Ascetic Body
Earn the "Up Close and Personal" achievement.

Elite Ascetic Head
Earn the "Steppin' Razor" achievement.

Elite Ascetic Shoulders
Earn the "Overkill" achievement.

Elite Commando Body
Earn the "Triple Kill" achievement.

Elite Commando Head
Earn the "Overkill" achievement.

Elite Commando Shoulders
Earn the "Killing Frenzy" achievement.

Elite Flight Body
Complete "Tsavo Highway" under the Heroic or Legendary difficulty.

Elite Flight Head
Complete Campaign mode under the Heroic difficulty.

Elite Flight Shoulders
Complete "The Ark" under the Heroic or higher difficulty.

Spartan EOD Body
Complete "Tsavo Highway" under the Legendary difficulty.

Spartan EOD Head
Complete Campaign mode under the Legendary difficulty.

Spartan EOD Shoulders
Complete "The Ark" under the Legendary difficulty.

Spartan EVA Body
Complete "Tsavo Highway" under the Normal or higher difficulty.

Spartan EVA Head
Complete Campaign mode under the Normal or higher difficulty.

Spartan EVA Shoulders
Complete "The Ark" under the Normal or higher difficulty.

Spartan Mark V Head
Earn the "UNSC Spartan" achievement.

Spartan ODST Head
Earn the "Spartan Graduate" achievement.

Spartan Rogue Head
Earn the "Spartan Officer" achievement.

Spartan Scout Body
Earn the "Too Close to the Sun" achievement.

Spartan Scout Head
Earn the "Used Car Salesman" achievement.

Spartan Scout Shoulders
Earn the "We're in for Some Chop" achievement.

Spartan Security Head
Earn 1,000 Gamerscore points.

Spartan Security Shoulders
Earn 250 Gamerscore points.

Askar (10 points)
Score over points in the Campaign meta-game on the fourth mission.

Assault (30 points)
Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary.

Black Eye (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Black-Eye Skull
Effect: Melee hits instantly recharges your shield.

Where to find: Crow's Nest

How to find: As soon as you start the level, head straight up to the higher level. Head toward the door with the red light, then turn around. Jump onto the racks, onto the red metal light holders, then onto the ventilation tube. The skull will spawn at the end.

Blind Skull
Description: "Shoot from the hip"

Stage: First Stage

How To Find: When you get to the area where you see the Phantom overhead (one of the marines will point it out) jump over the rocks and keep following the path on the right. When you get to the cliff there will be a rock over of the side. The skull is on the end of the rock.

Note: This skull has to be Activated before you start a Campaign map.

Campaign Complete: Heroic (125 points)
Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned).

Campaign Complete: Legendary (125 points)
Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned).

Campaign Complete: Normal (125 points)
Finish the Campaign on Normal.

Catch (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Catch Skull
Mission: The Storm

Effect: "Pull pin. Count to three. Throw." -- Every NPC carries two grenades and throws them often.

You can get this by performing a grenade jump off a warthog, or grab a ghost and go back to the ramp from which you first came out, using the ghost to push a big square crate back over to the front of the silo pod that the skull is on top of, then use the box as a place to jump from.

Cavalier (10 points)
Score over points in the Campaign meta-game on the third mission.

Cleansing (30 points)
Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary.

Cowbell Skull
Effect: Explosive force increased (sputnik from H2)

Level: The Ark

Location: First pick up a grav lift from the small building near where you fight the scarab. Now proceed through the level until you reach the second sloping hallway (stairway), you should see some partitioned risers (platforms) halfway down. The skull is on the top level. Toss the grav-lift on the right side of the hall so it lands on the fourth little green dot from the door. Then run, jump, and use the grav-lift to propel you to the top. You should reach a ckeckpoint just as you enter the room so it you miss just try again.

Demon (10 points)
Score over points in the Campaign meta-game on the second mission.

Elite Armor Permutations
Unlock the following Elite armor permutations by fulfilling the requirement listed:

Ascetic (Body) - Get the Up Close and Personal Achievement
Ascetic (Head) - Get the Steppin' Razor Achievement
Ascetic (Shoulders) - Get the Overkill Achievement
Commando (Body) - Get the Triple Kill Achievement
Commando (Head) - Get the Overkill Achievement
Commando (Shoulders) - Get the Killing Frenzy Achivement
Flight (Body) - Complete Tsavo Highway (on Heroic or Legendary)
Flight (Head) - Complete the campaign mode (on Legendary or Heroic)
Flight (Shoulders) - Complete The Ark (on Heroic or Legendary)

Exterminator (10 points)
Score over points in the Campaign meta-game on the fifth mission.

Famine (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Famine Skull
Mission: The Ark

Effect: "Trust us. Bring a magazine." -- Dropped weapons will have very little ammo compared to normal.

When you first go into the valley to the right after the wrecked phantom, look to your left where you will see a huge boulder. Use a ghost and get to the side of the boulder that is closest to the bridge overhead. It is easy to pilot the ghost up the side of the wall using the thrust. To get the skull, pilot 2 ghosts up the wall to the top of the bridge and stack them one on top of another next to the beam where the skull is placed. Simply jump from the top of the ghosts towards the skull and land on the beam.

Fear the Pink Mist (5 points)
Kill 5 enemies with the needler in a ranked free for all playlist or in campaign.

Fog (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Fog Skull
Mission: Floodgate

Effect: "Youll miss those eyes in the back of your head." -- Your motion sensor disappears.

As you are walking down from the anti-air gun you destroyed in the previous mission, you encounter a ramp (next to a missile launcher). Around this ramp, you hit a checkpoint. At this point, you should also hear a marine yelling, There! Over There!. Look up and to the right, directly at the roof of the building next to the missle launcher. There is a single flood form (not to be mistaken with the two other flood forms jumping in front of you) which is holding the skull. Kill him before he jumps, and he will drop the skull down to the ground where you can retrieve it. Too early, and the skull will get stuck on the roof though, so just time it carefully.

Funny Conversation
On the second level of the campaign, when you're escorting characters to their ships, you can head the wrong away from where you're supposed to go to complete your mission. If you do, you'll run into two characters (separated by a door) having a humorous conversation.

Grunt Birthday Party skull
Effect: Headshots cause enemies to explode.

Where to find: Crow's Nest

How to find: Right after the first objective, while en route to the barracks, you will fall down onto a pipe. At the end of this pipe, look over the edge to see a small space a few feet below you. You must simply drop over and as quicly as you can, pull back to land under the floor you were just on. After that, the skull will be at the end.

Guerilla (10 points)
Score over points in the Campaign meta-game on the first mission.

Hayabusa Armor
Collect the hidden skulls throughout the game to unlock the pieces of Hayabusa armor.

Effect - Code

Hayabusa Chest - Collect 6 hidden skulls
Hayabusa Shoulders - Collect 9 hidden skulls
Hayabusa Helmet - Collect 13 hidden skulls

Headshot Honcho (5 points)
Kill 10 enemies with headshots in a ranked free for all playlist or in campaign.

Holdout (20 points)
Finish the second mission of the Campaign on Normal, Heroic, or Legendary.

Iron (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Iron Skull
Effect: When either player dies in Co-Op on any difficulty both players will restart at last check point.

Where to Find: Spartan 117

How to find: In the area where you rescue Sarge, behind the prison cell is a large ledge. Got to the far right side and jump on the boxes, then onto the pipes to get up on the ledge, goto the far end of the ledge, turning two corners the skull is at the far end.

Killing Frenzy (5 points)
Kill 10 enemies without dying in any ranked free for all playlist (Online).

Landfall (20 points)
Finish the first mission of the Campaign on Normal, Heroic, or Legendary.

Last Stand (40 points)
Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary.

Lee R Wilson Memorial (5 points)
Score 5 grenade sticks in any ranked free for all playlist (Online).

Marathon Man (40 points)
Locate and access all Terminals in the Campaign.

Maybe Next Time Buddy (5 points)
Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online).

Mongoose Mowdown (5 points)
Splatter an enemy with the mongoose in a ranked free for all playlist (Online).

MVP (5 points)
Earn the MVP in any ranked playlist (Online).

Mythic (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Mythic Skull
Effect: Every enemy on the field now has double their normal amount of health.

Where to find: Halo

How to find: As soon as the mission starts walk up the hill in front of you and into the cave. Hug the right side of the cave and after a large boulder you will see a path on your right, just take the short path and it will be at the end.

Orpheus (10 points)
Score over points in the Campaign meta-game on eighth mission.

Overkill (5 points)
Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online).

Ranger (10 points)
Score over points in the Campaign meta-game on the sixth mission.

Reclaimer (10 points)
Score over points in the Campaign meta-game on the final mission.

Refuge (30 points)
Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary.

Return (50 points)
Finish the final mission of the Campaign on Normal, Heroic, or Legendary.

Skull Collecting
While collecting skulls, keep in mind that you have to start the stage from the beginning (not from a checkpoint), but once you acquire the skull you're seeking, you can save and quit at any time without finishing the stage. This will allow you to collect skulls without having to worry about finishing the stage successfully.

Skulls
You can only claim/collect the skulls under the Normal, Heroic or Legendary difficulty settings. You must start from the beginning of the mission. You will not be able to see the skulls if you load from a checkpoint. In Co-op mode, as soon as one player picks the skull up, all players will receive the achievement. Not all skulls earn an achievement; only nine of them do so. To use skulls, press X at the lobby screen. This will give you a bonus multiplier for co-op and go towards earning the Guerrilla, Demon, etc. achievements.

Black Eye Skull
From the start of the "Crow's Nest" mission, without moving anything, you can see a massive pipe above you. Walk up the stairs, then up the next set. Turn to your left and jump up on the shelf unit. From there, jump to the red cross beam then up onto the pipe. From there, just walk to the end. Walk over the Black Eye Skull to claim it. You do not have to pick this skull up, it does it automatically. Its description reads "Bash your way to better health." Your shield will not auto-recharge anymore, and you must kill an enemy with a melee attack.

Blind Skull
In the first mission, get to the area where you see the Phantom overhead. A Marine will point it out. Jump over the rocks and follow the path on the right. When you reach the cliff, there will be a rock over the side. The skull is at the end of the rock. Its description reads "Shoot from the hip". This skull must be activated before you start a Campaign map.

Grunt Birthday Party Skull
Immediately after the first objective of the "Crow's Nest" mission, while en route to the barracks you will fall down to a pipe. Get to the end that pipe. Look over the edge to find a small space a few feet below. Drop over then quickly pull back to land under the floor you dropped from. The skull will be at the end of this area. When this skull is active, headshots will cause enemies to explode.

Iron Skull
After freeing Johnson and killing all the Covenant that come in the Phantoms in the "Sierra 117" mission, walk to the Pelican that arrives to pick you up. Face the cargo bay, but instead of hopping in turn left and follow the path. Once you hit the wall, jump up to your right to eventually reach a walkway. Walk all the way to the end. Take a left, then a right. At the end of this a little bit to the right is a dark corner. Press Up to turn your light on and you should see the skull. If you cannot see it you are probably standing on it. Its description reads "Death carries a heavy price...". Instead of only losing 25 points when you die, you will lose 75.

Mythic Skull
Follow the normal path in the "Halo" mission until you reach a cave. Hug the right wall until it branches off into a small path. At the end of this path is some rubble, and in front is the skull. Its description reads "Coverage under the Covenant health plan." It gives a 3x score multiplier for all kills.

Spartan Officer (25 points)
Advance to the Spartan Officer ranks (Online).

Spartan Program Recruit (10 points)
Win your first game in matchmaking to sign up for the Spartan Program (Online).

Special Ending
If you beat the game on Legendary mode, you will get a special, extended ending. Keep in mind that you only have to beat the final stage on Legendary mode, and not necessarily the rest of the game, in order to unlock this ending.

Steppin' Razor (5 points)
Score a Triple Kill with the sword in a ranked free for all playlist (Online).

The 7 Terminals
The Ark:

1. Start the mission and once you enter the first building take a left into another door and now you should be in a curved corridor. On the inside is a Terminal.
2. After activating the bridge to let your comrades accross the gap, do a 180 and you should see it. (it does not open until you activate the bridge)
3. In the third building after defeating the scarab, kill the group of sleeping covenant, then follow the corridor downwards. Once you reach a door in front that is locked, immediately on the left there's an open door. Go through and walk straight off, then do a 180 to find a secret room. It is in there.

The Covenant:

1. When in the first tower standing on the lift, face the access panel and turn left. Jump over and it's right there.
2. Land your hornet on the second tower, walk towards the entrance but when you see the locked door, do a 180. Should be right in front of you.
3. When in the third tower standing on the lift, face the access panel and turn right. Jump over and it's right there.

Halo:

1. After reaching the end of the first cave, hug the right wall and you will see a building. Jump up onto the walkway and hang a left once inside. It's right there.

The Key (40 points)
Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary.

The Road (20 points)
Finish the third mission of the Campaign on Normal, Heroic, or Legendary.

Thunderstorm (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Thunderstorm Skull
Mission: The Covenant

Effect: "Field promotions for everyone!" -- Upgrades enemies to their stronger versions.

After you shut down tower 1 and get access to the hornet, fly to tower 2 (the one the arbiter shut down). While walking up the stairs, go to the middle part that connects both and there should be a stair leading up to a platform where the skull is.

Tilt (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Tilt Skull
Mission: Cortana

Effect: "What was once resistant is now immunity" -- Enemies have different body parts that may be resistance to certain bullet types

When in the circular type room with all the flood look for a small structure piece next to two archways, jump on top if it and up on the rocks to the top left, turn left and jump up again, then do a 180 and jump to the rocks across from you. After that follow the the rock sticking out and leading up on top of of the original circular room, the skull will be in a pile of blood.

Too Close to the Sun (5 points)
Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign.

Tough Luck (10 points)
Finish the Campaign on Normal, Heroic, or Legendary, then find and claim this skull.

Tough Luck Skull
Effect: Enemies do saving throws

Where to find: Tsavo Highway

On Tsavo Highway, about halfway through the mission (right after you are forced to walk through a large blue barrier), you will come out of a tunnel on the highway, and see a large pipeline on your left. Drop down in between the two, and run to the wall in front of you. Follow the wall all the way to where it connects with the cliff on your right, and turn to the left. There should be a few ledges--simply crouch jump from ledge to ledge, and the last one should have the "Tough Luck" skull on it.

Triple Kill (5 points)
Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online).

Two for One (5 points)
Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online).

UNSC Spartan (15 points)
Earn your Sergeant rating to be recognized as a true Spartan (Online).

Up Close and Personal (5 points)
Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online).

Used Car Salesman (5 points)
Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign.

Vanguard (10 points)
Score over points in the Campaign meta-game on the seventh mission.

We're in for some Chop (5 points)
Destroy an enemy vehicle with equipment in a ranked playlist or in campaign.

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