"Friendly" Brutes

On the level Crow's Nest, where Miranda Keyes, Sergeant Johnson and the Arbiter board the last Pelican dropship leaving the base, before the battle finishes set a deployable cover outside the door that the second wave of Jet-Pack Brutes emerge from, blocking their way. Kill the Brutes that are already present, and return to the deployable cover. Take down the shield, though do not destroy its base, and you are able to enter the room until it regenerates. The Brutes present will no longer regard the player as an enemy, and though they will look at the player, they will not attack. If the deployable cover is destroyed, they will continue outside the chamber and will regard the player as an enemy.

Note

 * This will work with other brutes in other levels, and may also work with other enemies
 * It is unknown why it only works the best with brutes