MIND YOUR STEP
Complete Reactor Maintenance without dying
Alien Isolation MIND YOUR STEP – Achievement / Trophy Guide
If you are about to die, go into the menu and restart the last checkpoint. You have to do this before the death animation.
Near the end of this mission you will go down an elevator to the Reactor Maintenance. This is the area where you are not allowed to die.
This place is more scripted than the rest of the missions, which makes it easier to kill the facehuggers (spiders) and the aliens. The aliens can still get unpredictable at certain points but the facehuggers should appear exactly as they do in the video for you.