Halo: Combat Evolved Cheats

Towards the beginning of the game, there is a way to bypass the two weapon limit and carry three weapons at once. On the first level, make your way to the bridge. After speaking with the captain, quickly run out of the bridge before the chapter name disappears. If you were fast enough, the checkpoint at the door will not trigger. Now run to the mess hall and get your Assault Rifle and another weapon. Now, run back to the bridge and trigger the checkpoint. When you go back towards the mess hall, the pistol will appear in your hands, and you will be carrying three weapons instead of two. Each gun reloads and exchanges normally. Note: This only lasts for the first level.

In the fifth level, at the beginning when you are released of the pelican, immediatly press ''e'' to get back onto the pelican and continue flying with the ship. But eventually you will die.

There is a room inside of the main building (the one that houses the Silent Cartographer itself) that has its door's lock when you come near (this normally forces you to take a serious detour to another building on the island to unlock these doors). Drive the warthog you recieve from Foehammer inside this building and as soon as you get inside the room DRIVE!! If you did it fast enough you can get the warthog between the doors. The doors will move in and out trying to close infinitly but can't because the warthog blocks them. Drive forward as far as you can and get out. You just skipped the giant detour! You can get back to the other side by getting back in the warthog, backing up as far as possible and getting out again. Another bonus to this glitch is that there will be a gold elite that won't move at all on the other side of the door. He can be killed or you could just leave him because he respawns when you have to come back through the door after activating the Cartographer.