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Cheats for Halo: Combat Evolved for Xbox
By Microsoft

Here are all the known cheat codes for Halo: Combat Evolved for Xbox

View the Game Guide for this game

Thanks to shadow_dog for sending these in:
	When a drop ship unloads aliens, the next drop ship will hover in the air. If you take your sniper rifle and zoom in on the sides where the doors open, the targeting cursor will turn red. Fire once or twice and the alien will plummet to the ground.	Get the Drop on the Dropship
	Through one plasma grenade in a wide open spot, then stick another directly on top of it if you do this fast enough the first gernade will launch the second and vuaola fireworks.	Fireworks
	To get infinite grenades, scorpion, and ghost in multiplayer- Go to the multiplayer screen: go to edit game types: In that menu you will have the option to make up your own game type.	Infinite Grenades
	To get a different, longer ending movie, beat the game on "Legendary."	Alternate Ending
	To create yourself a living bunker, get yourself to a level with lots of Flood. Use an Assault Rifle. When the larger Floods get close enough, or when they're on the ground about to get up, shoot their arm at the elbow. Their arm will blow off, rendering them harmless. The armless Flood will try to attack you, walking right up to you, so if you blow enough arms, the Flood will completely surround you, creating a bunker for you. Really funny!!	Living Bunker
	Beat the game on normal and legendary difficulty settings in under 3 hours.	2 New Guns
	On Final Run clear the first area. On the second area take a left there will be a rocket launcher and a sniper rifle. They are at a tunelthat is blocked by boulders. Jump on one of these and crawl through a space that is kind of hidden. Then follow the tunel. If you did this correctly there will be no eniemes or any Banshees.	Two-Betrails glitch
	On the Assault on Control Room level. I found a cool shortcut. When you get to the rock bridge with two Banshees on it, walk as quickly as you can to the left side of the bridge as close to the wall as possible and walk off. note DO NOT JUMP! If you jump you wil not survive the fall. If you want you can shoot the nearest banshee off the ledge with a grenade, or a rocket and use it against the Wraith Tank. This cheat eliminates alot of enemies, plus you skip about half the level. Good luck.	Impossible Jump
	Near the end of the 5th level (Assault on the Control Room), snag a Banshee in the open area and head up to the Control Center. There are three ledges that bracket the central pillar in front of the door; you want the middle one. You can land your Banshee parallel to the walkway, facing the left (with respect to the door), and hop out the back. Be careful - if you're not perfectly straight, you'll hop out to your death. Walk to the right end of the ledge... and stand still. You should hear this soft, sorrowful music playing. Just so you know, the name of this masterpiece is called The Siege of Madrigal, and it can be found in Bungie's earlier game, Myth. It was written by Marty O'Donnell from Total Audio.	Hidden Music easter egg
	When you are going back through the ''Attack On The Control Room'' stage, your objective is to destroy all the generators. The moment you or your partner gets close to the last generator, the flood will kill you. Instead, exploit the co-op system to your advantage. Notice that on co-op, when one of you is further ahead then the other player, the lagging player is warped ahead. At the hallway before the last generator, spend a moment and practice finding the warp spot, now when you're sure you've located this spot have one player stand a step away from the spot that will cause the other player to warp. Have the player that will warp go deactivate the last generator. Now as soon as the surge occurs, have the player in the hallway cause the warp and both players can leave relatively unscathed.	Attack On The Control Room Glitch
	WARNING: You may need to restart this stage if you pursue this easter egg. In the last level of Halo, you'll arrive at a second grouping of tunnels after the dropship pick up goes awry. Take the first tunnel on your right and there should be a fork leading to a dead-end half way through. If you head partly that way, you can hear a grunt talking about something phenomenonally droll.	Easter Egg: Talking Grunt
Thanks to dirtypear37 for sending this in:
	How to get to the bottom of the level on Assualt of the control room first of all you need to do this on co-op first you go to the first outdoor bridge and you knock out the grunts be sure not to wake up the other aliens though ok turn to your left and you will be at the edge of the bridge you see a little ledge now take a running jump off the bridge on to the sloping ledge if you keep on hitting kneel in air you can hit the ledge with no damage then if you make it you have your partner jumpoff and die after he respawns turn around and slide down the ledge untill your partner falls off wait five seconds then wlak off the edge and hopefully your partner will respawn on the ledge below then walk to your right until your partner falls off the edge and wait five seconds then you wlak off the edge and if you do it correct then your partner will be on the bottom of the level with no enemys and if you look enough you can find to banshees :)
	Halo: Combat Evolved is listed twice on accident. It's also listed under just Halo. Make sure you check that one out also for more cheats and hints. Sorry.