Shock to the System (10)

Use the stun baton

You will earn the stun baton automatically as part of the story. At the start of the sixth mission, you’ll have to remove one that’s jamming a door in order to proceed with the mission objective.

Hold down LT to ready the baton, then tap RT to thrust.

Alternatively, you can earn this achievement straight away in Survivor mode if you have the Crew Expendable or Last Survivor DLCs. With Crew Expendable you are able to use Dallas, Ellen Ripley, and Parker in Survivor mode (Last Survivor only includes Ellen).

Ellen has the stun baton in her inventory. Hitting a wall will use up one charge.