Halo 3 cheats and glitches?

[Gator fan19]

I need cheats and glitches my name is callofDewy19

 

[Bert L]

Not really a glitch, but if you get the skull on Crow's Nest, where you go to the stairs and jump on the vent, i beat the shit out of the Marines or Commander Miranda Keyes, the marines will die, but you can molest her all you want, LOL ROFLCOPTER SOISOISOISOISOISOISOISOISOI!!!!!!!!

 

[Dan C]

Halo 3 is notorious for not having any cheats for multiplayer.