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If you had cheat codes for halo 1, say it please to my! I won't heart ya!!
this is my cheat code:Dhttp://files2.halomods.com/viewtopic.php?t=18285Devtrainer
let me explain. there are no halo PC cheat codes. however, some people have managed to make trainers based off the devmode in haloCE. monky aparently has given you a link, but if you want a lasy:http://files2.halomods.com/viewtopic.php?t=18285