Before Doing, Please Read.
*This is only temporary.
*You MUST have two controllers in order for this to work.
*You will not be able to view file shares or Bungie Favorites for this glitch makes you an offline account in a sense.
*Your armor may be reset temporarily.
*DO NOT sign in any guest accounts while this glitch is active.
*Make sure your connection is set to Xbox LIVE and you are signed in with a gold subscription account.

STEPS IN ORDER:

1.) Go to the matchmaking lobby and select which playlist you wish to play.
2.) Turn on/plug in your second controller.
3.) Back out to the Main Menu
4.) Press the “A” button on the controller you just turned on. (The one that isn’t signed in yet.) A menu you will pop up asking if you want to use a gamer profile or a temporary profile. Select “Use a Temporary Profile” then at the next pop up menu HIGHLIGHT, “Yes.”(Don’t press anything!) Then you can set that controller aside.
5.) Use your controller that is signed in to press the middle button on your controller. This brings up the mini dashboard. Now press it again and quickly press “A” when the mini dashboard goes away. Do this again once in the lobby to start the game. Right after you start the countdown bring up the mini dashboard again by pressing the center button.
6.) Once you see that you are in a game lobby, close the mini dashboard and select, “Yes.”
7.) Now, you’re almost done. Simply either veto the map or change any piece of your armor. (You can change your armor back right away.)
8.) You’re done! You now have a random Halo 3/Bungie generated gamertag.

Here’s the catch! It only works one game at a time. What I mean is that you have to sign out then back in and repeat steps 1-7 in order to do it again and get another random gamertag. You will notice that when it won’t load information from the server and you can’t start a match.

Once you get the steps down, it’s actually pretty quick and easy to do this over and over again. I hope you all have fun with this! It’s great if you have a capture card and can record the people’s reactions to your gamertag changing mid lobby. You can’t get banned for this by the way. You’re 100% safe

*ALL CREDIT GOES TO Halo3Archives*
Video TUT Below!

2) Get your freind to spawn a machine gun turret

3) Get on the turret

4) Tell your friend to pick up the turret while you are on it

5) You can ethier mess around whith this cool glitch or duplicate the turret

6) to duplicate the turret get the player that is on the turret to press B to remove the turret

There will be no explosion as normal but a new turret will apear in your hands while the other one still hass the gun on it!

Text Tutorial: First go into forge (you have to be non-host for the glitch to work) and then make the immovable item that you want to dummy. To dummy the item, make sure your looking at the item while in forge and then press ‘up on the d-pad’ and the ‘A button.’ (You want to press the A button the at the exact moment when you change back into a person, so you will pick up the item for a split second.) Then, if you did it right, you should be able to move the item around on your screen and on everyone elses it will be in the same spot.

1. Go into your game settings and make sure your health is set to invincible.
2. Choose the map of your likings.
3. Get outside of the map.
4. Spawn a machine gun turret on top of a couple of fusion coils or any type of explosive. (Be careful not too many)
5. Have the non-connection host dummy the turret. (Heres a Tutorial on Dummying)
6. Have the person who just dummied the turret get on it.
7. Now have a friend get in a tank (or just use a rocket launcher, hornet ect. Whatever you want) and shoot right below you.

If you did everything correctly you should be flying through the air. Have fun with this.