The trophy or achievement will pop at the very end of the mission. The entire encounter will take around 3 minutes.
Only walk and crouch! Also use your motion tracker to see the current location of the Alien.Īll you need to do is grab Morley's Keycard from the corpse in room A-29, then exit the area. You may never ever run or it will hear you. The Alien will then drop from the vents above. This is your main objective and unmissable.
The part for this trophy / achievement starts when you access the computer in Morley's office. Completed 'The Quarantine' without being killed by the Alien
