Arm glitch
From Halopedia, the Halo wiki
Template:Ratings The Arm Glitch is a glitch that can cause your arms to be bent or missing. As seen in the video, it can cause the character's arms to be bent or missing. It can only be achieved through Forge. Almost every gun has a different arm bend, often encouraging people to try different guns. Different weapons can have different effects and can do different things. When using a Sentinel Beam or a Gravity Hammer, if you hold RT the users arms will blow off and if you delete the weapon, he will have only one arm left and he should be invincible. This trick is called, Halo 3's Invincibility Glitch.
Tactics
A good tactic is to have a team who knows how to use it and use it against oblivious enemies. The shot normally doesn't come from you and can fool the enemy. Sometimes a shot doesn't come at all, but it still hurts the enemy. One part of the glitch can make the gravity hammer even more dangerous. It is called the Nuclear Bomb Glitch. This glitch is better for a last resort method, and it is very powerful.
