Grindin` Achievement Guide

Towards the end of this mission, you will have to use a console to regulate the pressure of some valves. It's part of the story and cannot be missed. There will be three bars on the screen. You need to keep them in the middle, so they are colored green.
Use the left stick to move the bars up and down to keep them in the green zone. It doesn't matter if they drop to the yellow zone for just a moment, as long as you bring them back to the green zone quick enough.