Lower weapon
During a local match or replay, click Left Analog-stick + LB+ RB + A + Down for approximately three seconds.
If done correctly, your weapon will not be visible on your screen. When you shoot, your weapon will be raised
again.
Show coordinates
During a local match or replay, click Left Analog-stick + click Right Analog-stick + LB + RB + Down/Right.
Toggle panning camera
During a local match or replay, click Left Analog-stick + click Right Analog-stick + LB + RB + Up/Left.
Infinite Spartan laser in Halo mission
Use the following trick to get a Spartan laser with unlimited ammunition in the "Halo" mission. Play through
the level until you meet up with Sergeant Johnson. Shoot him until he falls down and drops the Spartan laser.
Quickly pick it up, and shoot it at him. Keep shooting him until he kills you. When you respawn, knock him
down again, and pick up his laser. He should get back up with another laser on his back. When he does, shoot
him down again, and pick up the new gun he drops. This laser should now have unlimited Spartan ammunition.
This makes it easier to destroy the Guilty Spark 343.
Katana
Successfully complete all achievements (1000/1000) and find all Skulls to unlock the Katana.
Alternate endings
There are three endings. The first ending is shown when the game is successfully completed on the Easy,
Normal, or Heroic difficulty setting. The second ending is shown when the game is successfully completed on
the Legendary difficulty setting. The third ending is shown when the game is successfully completed on the
Legendary difficulty setting with all Skulls activated.
Easier Legendary mode
If you are playing alone on the Legendary difficulty setting, turn on an idle second player to stay behind. If
you die, you will respawn instead of restarting.
Super fast Spartan laser fire
In Forge mode, get a Spartan laser. Charge it until it is almost about to fire. Before you fire, turn into the
Monitor. Fly around until you find a target. Before you turn back into a human, hold RT to fire the Spartan
laser almost instantly (if done correctly). You can use the Monitor's aimer to aim the laser.
Smarter respawning
When playing in Co-op mode on the Legendary difficulty setting, it is best to have one player keep their
distance from the enemy at all times. By doing this, if the rest of the players die, they will respawn around
the player that is farther back, rather than having to restart at the checkpoint.
Easy experience in Multiplayer mode
Note: This trick requires four active accounts on your console that are all able to play on Xbox Live.
Enter the matchmaking lobby, and choose "Social", then "Rumble Pit". Sign all four of your accounts in the
lobby. In free for all modes, you have to be in the top three to earn experience points. Start matchmaking,
and it should find two additional players. Once the game begins, you can simply do nothing. Once the game
ends, all four of your accounts will tie for third place, giving all of them easy experience points.
Getting in the same ranked Lone Wolves game
Go to the Xbox 360 Dashboard. Change your language to the second option from the bottom, then start Halo
3. Invite four other friends that are about the same rank as you, and have them change their language to
the same one as you. Get everyone in the same party; everyone must search at the same time. Everyone must then
make a game in Lone Wolves. Before you go to start the countdown, press X to change the search options to the
bottom one, which is to search for the same language. If done correctly, you should be in the same ranked Lone
Wolves game as your friends. You can now get achievements or level someone up.
Extra grenades
In Multiplayer or System Link mode, when you kill someone, slash their dead body with the Energy Sword for
more grenades come out of it.
Armor permutations
Successfully complete the indicated task in Campaign mode to unlock the corresponding armor part in
Multiplayer mode:
Elite
Ascetic Body: Accomplish the "Up Close and Personal" achievement.
Ascetic Head: Accomplish the "Steppin' Razor" achievement.
Ascetic Shoulders: Accomplish the "Overkill" achievement.
Commando Body: Accomplish the "Triple Kill" achievement.
Commando Head: Accomplish the "Overkill" achievement.
Commando Shoulders: Accomplish the "Killing Frenzy" achievement.
Flight Body: Successfully complete the "Tsavo Highway" mission on the Heroic or Legendary difficulty setting.
Flight Head: Successfully complete Campaign mode on the Heroic difficulty setting.
Flight Shoulders: Successfully complete "The Ark" mission on the Heroic or higher difficulty setting.
Spartan
EOD Body: Successfully complete the "Tsavo Highway" mission on the Legendary difficulty setting.
EOD Head: Successfully complete Campaign mode on the Legendary difficulty setting.
EOD Shoulders: Successfully complete "The Ark" mission on the Legendary difficulty setting.
EVA Body: Successfully complete the "Tsavo Highway" mission on the Normal or higher difficulty setting.
EVA Head: Successfully complete Campaign mode on the Normal difficulty setting.
EVA Shoulders: Successfully complete "The Ark" mission on the Normal or higher difficulty setting.
Mark V Head: Accomplish the "UNSC Spartan" achievement.
ODST Head: Accomplish the "Spartan Graduate" achievement.
Rogue Head: Accomplish the "Spartan Officer" achievement.
Scout Body: Accomplish the "Too Close to the Sun" achievement.
Scout Head: Accomplish the "Used Car Salesman" achievement.
Scout Shoulders: Accomplish the "Mongoose Mowdown" achievement.
Security Head: Earn 1000 Gamerscore points.
Security Shoulders: Accomplish the "Marathon Man" achievement in the Campaign Meta-game.
Hayabusa armor
Collect the indicated number of Skulls to unlock the corresponding piece of Hayabusa armor:
Hayabusa Chest: Collect 6 Skulls
Hayabusa Helmet: Collect 13 Skulls
Hayabusa Shoulders: Collect 9 Skulls
Skull locations
You can only collect Skulls on the Normal, Heroic, and Legendary difficulty setting. You must start from the
beginning of the mission. You will not be able to see the Skulls if you load from a checkpoint, unless doing
so after dieing. In Co-op mode, as soon as one player picks the Skull up, all players will receive the
achievement if there is one. Not all Skulls earn an achievement; only nine of them do. To use Skulls, press X
at the lobby screen. This will give you a bonus multiplier for Co-op mode and go towards earning the
Guerrilla, Demon, etc. achievements.
Black Eye Skull: At the start of the "Crow's Nest" mission, without moving anything, you can see a huge pipe
above you. Walk up the stairs, then up the next set. Turn to your left and jump up on the shelf unit. Jump to
the red cross beam, then up onto the pipe. Then, just walk to the end. Walk over the Black Eye Skull to
collect it. You do not have to pick this Skull up, it does it automatically. The Skull description reads "Bash
your way to better health." When this Skull is active, your shield will instantly charge when you use melee
attacks, and will not auto-recharge anymore.
Blind Skull: In the "Sierra 117" mission, 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 the side. The Skull is on the end of the rock. The Skull description reads
"Shoot from the hip." Note: This Skull has to be activated before you start a campaign map.
Catch Skull: In "The Storm" mission, go to where the first anti-air Wraith tank is located. There is a large
gray cylinder in the that area on the ground on the far side from where you enter. The Skull is on the top of
the silo. To get up there, perform a grenade jump off a Warthog or use a vehicle to push a large crate to the
side of it; jump on the crate, then the silo. Note: Do not destroy the Wraith near the door or the
Skull will disappear. The Skull description reads "Pull pin. Count to three. Throw." When this Skull is
active, every NPC will carry two grenades and throws them often.
Alternately, take a Warthog, and park the front of it next to the cylinder. Take out a grenade (plasma
recommended), and throw
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