Unintended firing glitch
From Halopedia, the Halo wiki
The Unintended Firing Glitch is a glitch that can be performed in Halo: Reach. It results in a player continually firing their weapon while the game is paused.
Method 1
- Equip an automatic weapon.
- Crouch.
- Press Start or cause your controller to disconnect (Take the battery out or hold the guide button and then select "Disconnect controller")
Your character should now be firing continuously, reloading if necessary, until you re-connect your controller.
Trivia
- This glitch is most noticeable online as when playing offline, the character will not fire continuously but rather only one shot when leaving the pause menu.
- This glitch is particularly annoying when playing Matchmaking games as it makes you stand out. Particularly if you accidentally disconnect your controller, as by the time it is reconnected, you may be out of ammo.