1. Collectibles
1.1. All ID Tags
1.2. All Nostromo Logs

2. Story-Related
2.1. Just out of Reach (Mission 4)
2.2. Hide. Run. Survive. (Mission 5)
2.3. Mind Your Step (Mission 14)

3. Miscellaneous
3.1. My Turn Now – Kill an android using only the maintenance jack
3.2. Stunned – Knock down a human or stun an android with a non-lethal attack

The Taken
Collect all ID tags
There are a total of 50 ID Tags in Alien Isolation. Finding all of these collectibles will earn you the “The Taken” trophy or achievement.
You can see which ones you have found by opening the map menu. Each ID Tag has its own name, so you can easily keep track of what’s missing.
The IDs are saved automatically when you pick them up. There is no need to get them again if you die.
Missing collectibles can be picked up via mission select at any time.

Here is an overview of all ID Tag names which you can use to identify what you are missing: ID Tag Overview

Archivist
Collect 10 Nostromo logs in the main campaign
There are a total of 10 Nostromo Logs in Alien Isolation. Finding all of these collectibles will earn you the “Archivist” trophy or achievement.
You can see which ones you have found by opening the map menu. Each Nostromo Log has its own name, so you can easily keep track of what’s missing.
The logs are saved automatically when you pick them up. There is no need to get them again if you die.
Missing collectibles can be picked up via mission select at any time.

You should get the first 8 Nostromo Logs in Free Roam during Mission 16. Just load up this mission and ignore the main objective. The reason for this is that you need all of the tools that are unlocked later in the game. You get the level 3 access tuner in mission 15. Only after this point you can get all Nostromo Logs. Certain tools are required to open doors.

The way free roam works is that there are 4 Transit Stations: Lorenz Systech Spire, Sevastopol Scimed Tower, Solomon’s Habitation Tower and Engineering. You can travel between these areas via the train station (there is a red sign above each station that says where the train is going). Each of these areas has elevators that bring you to the other side areas, such as Seegson Synthetics. When you scroll over an elevator on your map and zoom in, you can see where it will bring you.

For instructions how to get to every area in
free roam please click here: Nostromo Log Overview

Just out of Reach
Contact your team and escape Comms without being attacked by an android
Mission 4: Seegson Communications
This can be done via chapter select. During this mission you may not attack any of the androids (the robots that look like humans) and you may not be grabbed, punched or kicked by one. It’s totally okay if they see you. As long as they don’t make physical contact with you it’s all fine. If they do touch you, then start from the last save game.
You can run through most sections, but in some occasions it’s safer to sneak past the enemies (especially at the end). Pay attention at which point of the video I run, when I walk and when I crouch. Try to copy that as good as possible and you shouldn’t have any trouble.
It also doesn’t matter if the Alien from the vents kills you. This has no influence on this trophy or achievement.

Hide. Run. Survive.
Completed “The Quarantine” without being killed by the Alien
Mission 5: The Quarantine
The part for this trophy / achievement starts when you access the computer in Morley’s office. This is your main objective and unmissable.
The Alien will then drop from the vents above. You may never ever run or it will hear you. Only walk and crouch! Also use your motion tracker to see the current location of the Alien.
All you need to do is grab Morley’s Keycard from the corpse in room A-29, then exit the area. The entire encounter will take around 3 minutes. The trophy or achievement will pop at the very end of the mission.

If the Alien spots you, or is about to kill you, then quickly restart the checkpoint.

Mind Your Step
Navigate Reactor Maintenance without dying
Mission 14: The Descent
During this mission you will have to take an elevator down to the Reactor Maintenance. This is basically an Alien Nest. The objective here is to overcharge the Alpha Core and Beta Core. As soon as you are done with that you can go back to the elevator to exit the area.
The game will automatically create a new save when you enter the Reactor Maintenance. You should now back up your save game (USB Stick / PS+ Cloud). In case you die, you can copy back your save game and try it again without having to replay the entire mission. If you are quick enough you can also restart the last checkpoint when you are about to die. There are, however, some spiders in this area that will kill you instantly with one hit and they are very hard to see because they are so tiny and move so fast. This is why you should back up your save game. There are also some normal Aliens. Pick up the Flamethrower in the beginning of the Reactor Maintenance to fend off the Spiders and Aliens. Also burn the Spider Pods before any enemy comes out of them.

My Turn Now
Kill an android using only the maintenance jack
Mission 4: Seegson Communications
A perfect spot for this is at the very start of chapter 4 where you encounter the first Android in the game. As you go through the long hallway you will see a friendly Android (robot that looks like a human). Attack him a couple of times with the maintenance jack from behind. This will put the Android in combat mode and he will counter all frontal attacks. So now you need to run away and hide until the Android goes back to his post. Sneak up to him and land some strikes from behind. Keep repeating this until he is dead.

Stunned
Knock down a human or stun an android with a non-lethal attack
Chapter 4: Seegson Communications
To stun androids you need to throw an EMP mine at them. The blueprints for this mine can be found in chapter 4, in a sideroom of the area where you contact your team (you have to access a computer here and will see a cutscene). Craft the item via your weapon wheel and throw it at one of the androids in this area.
If you don’t have the crafting materials at this point, then don’t worry. There will be many other encounters with Androids. Just build an EMP mine when you have enough materials and keep it in your inventory until you see an Android again.

Alternatively you can also do this against humans by throwing a flashbang at them. The flashbang blueprints can be found in chapter 3, in the area where you retrieve the new Data Cell.