Armor lock

Armor Lock is an armor ability in Halo: Reach and is only available to Spartans.

Description
When in performing an Armor Lock, the player is invulnerable to all damage, but the player also unable to move. Along with this, when the Armor Lock is activated, it will shed stuck Plasma Grenades and Needler rounds. It will emit a slight EMP when in use. The animation for Armor Lock is a Spartan, punching his fist on the ground. In doing so, his shields will look like they are about to burst. The Spartan will remain in this position as long as Armor Lock is active.

Armor Lock can be charged up in three stages, with each stage inflicting a stronger EMP and pushing opponents farther away. If the player's shield or health have taken damage before activating Armor Lock, the shields will not recharge and stay at where they were until after the player has finished using Armor Lock. Once the player has finished using the Armor Lock, the player's shield and health will be at where they were when the player activated the ability and will then recharge normally. This is a slight disadvantage to the armor ability.