Kill a Crusher without it damaging you

A Crusher is the large Xenomorph with the protective shell in front of its head that frequently charges and tries to trample you. There is only one in the Campaign, located in the ninth chapter "Hope in Hadley's". This foe can take a lot of punishment, especially from the front so you will need to shoot it in the back to deal any significant damage to it. OverBlownGaming has provided a very effective strategy that involves taking the Sentry Turret from the earlier battle with you and using it as a distraction against the Crusher. Using the destroyed APC as cover, you can slowly whittle down the Crusher's health from a relatively safe position.