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Halo 3 Cheats
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Cheat List
To unlock the extras go to options and select extras and enter codes:

• Unlock Scott Bernards Cyclone (Multiplayer): LTNTCMDR
• Unlock Rook Bartleys Cyclone (Multiplayer): BLUEANGLS
• Unlock Lancers Cyclone (Multiplayer): YLLWFLLW
• Unlock Rands Cyclone (Multiplayer): KIDGLOVES
• Invincibility (Single Player Only): SUPERCYC
• Unlimmited Ammo (Single Player Only): TRGRHPY
• Unlock All Levels (Single Player Only): RECLAMATION
• One Hit Kills (Single Player Only): DUSTYAYRES

Note All Passwords Are Case Sensitive. - Submitted By: Cheats Admin

Easter Egg: Jack Archer Lives!
After you beat the game, use the unlock all levels code and start a new game and select the Bygone Marshes (or just start a new game without the code and get to that level).

Turn around at the very start and there is a long area that you can drive through. So, drive through the pillars until you get to the last two sets of pillars. On one of them (facing north-east [use your compass]) there is vandalism that says, "Jack Archer Lives!!"

If you shoot that particular sign, a health pack will drop, followed by protoculture, then a Holden Mark-2 Shotgun. There's one more item that comes out, but you have to keep shooting the sign until it does. If you do, you'll get a soccer ball. You can shoot it with the shotgun to make it bounce all over and test out the Havok physics engine. - Submitted By: Cheats Admin

Hint: Unlock Third Ending
During the fight with the Invid princess (Reflex Point), turn on the THERMO scanner. There is bright yellow spot on her right shoulder (everywhere else is blue). It's hard to hit, but it's the only spot that's not covered by her freakin' overshield. By killing the boss through this way, you unlock the third ending.

Robotech: Invasion Cheats from 123 Cheats
Robotech: Invasion cheats for Xbox Cheats
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- Submitted By: Cheats Admin

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