Prey
58 Achievements
1,195
55-70h
No One Left Behind
In Mooncrash, escape the simulation with all five playable characters in a single run.
30
0.25%
How to unlock the No One Left Behind achievement in Prey - Definitive Guide
Before you start the run you want to unlock as many of the following as possible; ideally all of them. You can reset the simulation as many times as you want while gathering these.
I recommend using Joan for finding fabrication plans and Neuromods as she has the largest inventory so can collect a lot of items to break down into Neuromods.
(You can place the Neuromods in a container and pick them up with a different character as long as you don't reset the simulation in-between.)
- All 5 Playable Characters
(guide can be found here )
- Successfully escape with Riley Yu by uploading your consciousness 1 time.
- Find/craft/buy 1 Neuromod with Vijay and learn the Pilot ability
- Find/craft/buy enough Neuromods with Claire and learn the Hacking II ability
- Find/craft/buy enough Neuromods with Joan and learn the Repair III ability
- Find the fabrication plans for the following:
Shotgun(any rarity)
Shotgun Ammo
Med-Kit
Propulsion System
T-Ration(can find food instead)
Anti-Rad
Escape Pod Navigation Chip
Control Unit
EMP Grenade
(You can add effect cures e.g. Skeleton Repair, Burn Cream for safety but these are not necessary)
- You will also need a general understanding of the layout of each area so you can get around most efficiently. I would recommend escaping by each method at least one time beforehand so you know the routes.
The Final Run
Standard Set
(All characters are to take Shotgun, Shotgun ammo(around 50), 5 Med-Kit, Propulsion System (Not Vijay or Andrius), 5 EMP Grenade(More may be needed if you have a lot of Typhon abilities)
General Run Tips
Use EMP Grenades or Disruptor Guns to get through Typhon Gates without wasting time tracking them all down/or if you are Typhon.
Don't worry about sticking to rocks to avoid the Moon Shark; just keep running and jumping and he won't hit you.
It is often not necessary to kill most of the Typhon, but if any ever get in your face or block the path the Shotgun is there to deal with them quickly.
First character to use is Joan, equip her with the Standard Set + 4x Control Units, 1x Anti-Rad, 5x T-Ration.
While in the simulation you will need to do a bit of searching for some extra Spare Parts (or break down items if you have the perk)
When you load in head directly to the Security Station in the middle of the Crater, but DO NOT pick up the extra Propulsion System off the corpse on the way. Check the Station for the location of the functioning Escape Pod, for Tram Power and for other Hazard warnings.
Enter the Power Station area next to it and install the 2 Control Units in if any area is without power. (If they all have power you can drop 2 Control Panels here for extra space)
Next head to Pytheas Labs from the Crater and run to the Mimic Portal at the back of the labs. Repair the machine.
Return to the Volunteer Cells and unlock cell 5. Pass through the Typhon gate and collect at least 5 drinks from the cell.
If Moonworks Tram Station was powered when you checked at the Security Station then head upstairs to the Tram Station.
Power the Tram(if needed) and go to Moonworks.
If Moonworks Tram Station was not powered when you checked at the Security Station then head back to the Crater, and then to Moonworks.
Inside Moonworks, head to the bottom of the central mine and place the Anti-Rad, 5 T-Ration and 5 Drinks inside the marked shipping container.
Repair the Grav-Lift next to the container and ride it up to the Mass Driver.
Head to the Mass Driver console and activate it; you have only 60 seconds to make it back inside the shipping container, either by riding the Grav-Lift down or by jumping with the Propulsion System.
Escaped
Second character to use is Riley, equip her with the Standard Set.
Head directly to Pytheas Labs and navigate your way to the Directors Office. (If the stairs are broken you can climb a pipe to the left of the balcony)
Log into the computer and access channel 0.
Head upstairs and place the operator on the workstation. (If the stairs are on fire run through it)
Upload the data to the Operator then move it to the extractor.
Sit on the chair.
Escaped
Third character to use is Claire, equip her with the Standard Set.
Head directly to Pytheas Labs and navigate your way to the Mimic Portal.
Hack the Work Station.
Stabilise the portal then open the door using the Work Station. (You are timed)
Run into the portal.
Escaped
Fourth character to use is Vijay, equip him with the Standard Set. (He comes with a Propulsion System and Shotgun already)
Head to the Shuttle Bay on the third floor of the Crew Quarters either running past or fighting the Typhon along the way.
Enter the shuttle and kill the mimic in the storage room at the back of the shuttle.
Enter the cockpit of the Shuttle and sit down.
Escaped
The final character to escape with is Andrius. Equip him with the Standard Set. (He can pick up a Propulsion System off the corpse on the way to the Crater.) Also give him a Escape Pod Navigation Chip.
From your run with Joan at the security station you should know which area has a functioning Escape Pod.
Go to that area and make your way to the Escape Pods.
Open the Pod and place the Navigation Chip in the hole underneath the screen.
Close the Pod and activate the screen.
Escaped
And yep @ME3TSPINNER - Joan is good for killing the Moonshark but in my run through I got out with all 5 people about mid-way through Corruption 3, without using any Delay Loops (no idea how fast is possible), so if it does respawn at every Corruption then it would still be a problem. I find running past it works just fine most of the time ;D
While there are several different strategies as to getting this done successfully, you will find the following walkthrough outlined below to be the easiest and most efficient way to escape the Moonbase with all five characters in a single run.
Keep in mind that you can manually reset the simulation as many times as you'd like. Knowing this is important because in order to follow the walkthrough below, you are going to want to have the items/tasks listed under "Prep" already completed. This means you'll want to run through the simulation several times to ensure specific criteria are met.
Prep
- Because she has the largest inventory space (which only gets bigger if you install certain neuromods), use Joan and run through the simulation a few dozen times to collect fabrication plans and items that can be broken down to create Neuromods.
- Once you unlock the Mule ability, you can place leftover Neuromods with the Mule as one character before escaping; when you load into the simulation with the next character and summon the Mule, you'll have access to any items, such as Neuromods, that your previous character left behind
- Unlock all five playable characters
- Successfully escape with Riley Yu by uploading your consciousness at least once
- Unlock the Pilot ability for Vijay
- Unlock the Hacking II ability for Claire
- Unlock the Repair III ability for Joan
- Find the fabrication plans for the following items:
- Shotgun
- Shotgun Ammo
- Med-Kit
- EMP Grenade
- T-Ration
- Anti-Rad
- Delay Loop.Time
- Escape Pod Navigation Chip
- Propulsion System
- Control Module
- Escape the Moonbase simulation via each method at least once so that you understand how each of them work
The first character you will use is Joan. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (60+)
- Med-Kit x5
- EMP Grenade x5
- T-Ration x5
- Anti-Rad x1
- Delay Loop.Time x5
- Propulsion System
- Control Unit x4
Head to the Security Station in the Crater and check the terminal for the functioning Escape Pod, Tram Power, and any Hazards within the Moonbase. Now exit the terminal and head into the nearby Power Station. If there is an area without power, use two Control Modules to restore power to that section of the Moonbase. If all three areas already have power, drop two of the four Control Modules from your inventory.
Now head to Pytheas Labs. It's worth noting here the following items:
- EMP Grenades will be used to power down the Typhon Gates during each and every run
- The Propulsion System should be used often to cover ground quickly or evade Typhon if needed
- Use a Delay Loop.Time once your Corruption Timer fills up about 50 to 75%
- You want to ensure your Corruption Timer always remains at Level 1 while working on this achievement; if you reach Level 2, any and all Typhon you killed during Level 1, including the Moonshark, will respawn and they will be much stronger
- As such, if you end up killing most of the Typhon during this initial run with Joan, every subsequent run will be much easier since there won't be any enemies to worry about (unless you reach a new section of the Moonbase that you didn't previously clear out with Joan)
In Moonworks, head down to the central mine and place the Anti-Rad, five non-alcoholic drinks, and five T-Rations into the marked shipping container. Now repair the gravity lift nearby and use it to reach the Mass Driver Control Room. Fight your way to the marked control console. Before activating the Mass Driver controls, summon the Mule Operator and dump all of your inventory items onto the companion. Now activate the controls and quickly make your way back to the shipping container. You only have sixty seconds to escape. The moment you step foot inside the container, the doors will close and you will successfully escape the Moonbase.
Run 2 - Riley
The second character you will use is Riley. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x3
- EMP Grenade x3
- Delay Time.Loop x2
- Propulsion System
After this, head straight to Pytheas Labs and make your way to the Director's Office (it should be marked on your HUD if you activate the appropriate objective in your transcribe). If, upon reaching the second floor of Pytheas Labs, you find that the stairs leading to the Director's Officer are broken, you can use the ventilation on the far right wall (near the restroom) to reach the next floor.
Inside Riley's office, interact with the terminal and access Channel 0. Once this is done, go upstairs and place the Operator on the designated workstation. If the stairs are on fire in this playthrough, just run through the flames quickly and heal yourself afterwards. Next, upload the data to the Operator via the terminal and then move the Operator to the extractor. Before you sit down in the chair, summon the Mule Operator and dump all of your inventory items onto the companion. Now you're ready to sit down in the chair and escape the simulation.
Run 3 - Claire
The third character you will use is Claire. In the Loadout Menu, equip the following items:
- Shotgun
- Med-Kit x2
- EMP Grenade x2
After this, head straight to Pytheas Labs and make your way to the Mimic Portal. Before doing anything else, summon the Mule Operator and dump all your inventory items onto the companion (again, you likely didn't need to use much on this playthrough). Now hack the terminal inside this room and then choose the option to stabilize the Portal. The Portal will only stay stabilized for a few seconds, so quickly exit the terminal and run straight into the Mimic Portal in order to escape the simulation.
Run 4 - Vijay
The fourth character you will use is Vijay. In the Loadout Menu, equip the following items:
- Shotgun Ammo (60+)
- Med-Kit x4
- EMP Grenade x3
- Delay Time.Loop x2
After this, head straight to Crew Annex. Since you have yet to enter this section of the Moonbase with any previous character, take some time to fight the Typhon in Crew Annex and make use of Delay Loop.Time items to buy back as much time as needed to remain at Corruption Level 1.
You're goal here is to reach the top floor of Crew Annex. Once there, enter the shuttle, kill the mimic that is hiding in the storage room at the back of the aircraft, and then return to the cockpit. Summon the Mule Operator and dump all your inventory items onto the companion. Now interact with the shuttle's controls and escape the Moonbase simulation once and for all.
Run 5 - Andrius
The final character you will use is Andrius. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x2
- EMP Grenade x2
- Escape Pod Navigation Chip
During your escape run with Joan, you should have already pinpointed the location of the last functioning Escape Pod within the Moonbase. As such, all you need to do is head to that location with Andrius. You'll have to do a bit of fighting inside the Escape Pod room (whichever one it is [there are four potential locations]) since you have yet to visit any of these locations with any previous character.
Regardless, once the area is secured, enter the marked Escape Pod and shut the door behind you. Now place the Navigation Chip into the marked location on the floor and initiate the launch sequence on the terminal in order to escape the simulation and finally unlock the achievement!
While there are several different strategies as to getting this done successfully, you will find the following walkthrough outlined below to be the easiest and most efficient way to escape the Moonbase with all five characters in a single run.
Keep in mind that you can manually reset the simulation as many times as you'd like. Knowing this is important because in order to follow the walkthrough below, you are going to want to have the items/tasks listed under "Prep" already completed. This means you'll want to run through the simulation several times to ensure specific criteria are met.
Prep
- Because she has the largest inventory space (which only gets bigger if you install certain neuromods), use Joan and run through the simulation a few dozen times to collect fabrication plans and items that can be broken down to create Neuromods.
- Once you unlock the Mule ability, you can place leftover Neuromods with the Mule as one character before escaping; when you load into the simulation with the next character and summon the Mule, you'll have access to any items, such as Neuromods, that your previous character left behind
- Unlock all five playable characters
- Successfully escape with Riley Yu by uploading your consciousness at least once
- Unlock the Pilot ability for Vijay
- Unlock the Hacking II ability for Claire
- Unlock the Repair III ability for Joan
- Find the fabrication plans for the following items:
- Shotgun
- Shotgun Ammo
- Med-Kit
- EMP Grenade
- T-Ration
- Anti-Rad
- Delay Loop.Time
- Escape Pod Navigation Chip
- Propulsion System
- Control Module
- Escape the Moonbase simulation via each method at least once so that you understand how each of them work
The first character you will use is Joan. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (60+)
- Med-Kit x5
- EMP Grenade x5
- T-Ration x5
- Anti-Rad x1
- Delay Loop.Time x5
- Propulsion System
- Control Unit x4
Head to the Security Station in the Crater and check the terminal for the functioning Escape Pod, Tram Power, and any Hazards within the Moonbase. Now exit the terminal and head into the nearby Power Station. If there is an area without power, use two Control Modules to restore power to that section of the Moonbase. If all three areas already have power, drop two of the four Control Modules from your inventory.
Now head to Pytheas Labs. It's worth noting here the following items:
- EMP Grenades will be used to power down the Typhon Gates during each and every run
- The Propulsion System should be used often to cover ground quickly or evade Typhon if needed
- Use a Delay Loop.Time once your Corruption Timer fills up about 50 to 75%
- You want to ensure your Corruption Timer always remains at Level 1 while working on this achievement; if you reach Level 2, any and all Typhon you killed during Level 1, including the Moonshark, will respawn and they will be much stronger
- As such, if you end up killing most of the Typhon during this initial run with Joan, every subsequent run will be much easier since there won't be any enemies to worry about (unless you reach a new section of the Moonbase that you didn't previously clear out with Joan)
In Moonworks, head down to the central mine and place the Anti-Rad, five non-alcoholic drinks, and five T-Rations into the marked shipping container. Now repair the gravity lift nearby and use it to reach the Mass Driver Control Room. Fight your way to the marked control console. Before activating the Mass Driver controls, summon the Mule Operator and dump all of your inventory items onto the companion. Now activate the controls and quickly make your way back to the shipping container. You only have sixty seconds to escape. The moment you step foot inside the container, the doors will close and you will successfully escape the Moonbase.
Run 2 - Riley
The second character you will use is Riley. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x3
- EMP Grenade x3
- Delay Time.Loop x2
- Propulsion System
After this, head straight to Pytheas Labs and make your way to the Director's Office (it should be marked on your HUD if you activate the appropriate objective in your transcribe). If, upon reaching the second floor of Pytheas Labs, you find that the stairs leading to the Director's Officer are broken, you can use the ventilation on the far right wall (near the restroom) to reach the next floor.
Inside Riley's office, interact with the terminal and access Channel 0. Once this is done, go upstairs and place the Operator on the designated workstation. If the stairs are on fire in this playthrough, just run through the flames quickly and heal yourself afterwards. Next, upload the data to the Operator via the terminal and then move the Operator to the extractor. Before you sit down in the chair, summon the Mule Operator and dump all of your inventory items onto the companion. Now you're ready to sit down in the chair and escape the simulation.
Run 3 - Claire
The third character you will use is Claire. In the Loadout Menu, equip the following items:
- Shotgun
- Med-Kit x2
- EMP Grenade x2
After this, head straight to Pytheas Labs and make your way to the Mimic Portal. Before doing anything else, summon the Mule Operator and dump all your inventory items onto the companion (again, you likely didn't need to use much on this playthrough). Now hack the terminal inside this room and then choose the option to stabilize the Portal. The Portal will only stay stabilized for a few seconds, so quickly exit the terminal and run straight into the Mimic Portal in order to escape the simulation.
Run 4 - Vijay
The fourth character you will use is Vijay. In the Loadout Menu, equip the following items:
- Shotgun Ammo (60+)
- Med-Kit x4
- EMP Grenade x3
- Delay Time.Loop x2
After this, head straight to Crew Annex. Since you have yet to enter this section of the Moonbase with any previous character, take some time to fight the Typhon in Crew Annex and make use of Delay Loop.Time items to buy back as much time as needed to remain at Corruption Level 1.
You're goal here is to reach the top floor of Crew Annex. Once there, enter the shuttle, kill the mimic that is hiding in the storage room at the back of the aircraft, and then return to the cockpit. Summon the Mule Operator and dump all your inventory items onto the companion. Now interact with the shuttle's controls and escape the Moonbase simulation once and for all.
Run 5 - Andrius
The final character you will use is Andrius. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x2
- EMP Grenade x2
- Escape Pod Navigation Chip
During your escape run with Joan, you should have already pinpointed the location of the last functioning Escape Pod within the Moonbase. As such, all you need to do is head to that location with Andrius. You'll have to do a bit of fighting inside the Escape Pod room (whichever one it is [there are four potential locations]) since you have yet to visit any of these locations with any previous character.
Regardless, once the area is secured, enter the marked Escape Pod and shut the door behind you. Now place the Navigation Chip into the marked location on the floor and initiate the launch sequence on the terminal in order to escape the simulation and finally unlock the achievement!
This achievement is missable.
While there are several different strategies as to getting this done successfully, you will find the following walkthrough outlined below to be the easiest and most efficient way to escape the Moonbase with all five characters in a single run.
Keep in mind that you can manually reset the simulation as many times as you'd like. Knowing this is important because in order to follow the walkthrough below, you are going to want to have the items/tasks listed under "Prep" already completed. This means you'll want to run through the simulation several times to ensure specific criteria are met.
Prep
- Because she has the largest inventory space (which only gets bigger if you install certain neuromods), use Joan and run through the simulation a few dozen times to collect fabrication plans and items that can be broken down to create Neuromods.
- Once you unlock the Mule ability, you can place leftover Neuromods with the Mule as one character before escaping; when you load into the simulation with the next character and summon the Mule, you'll have access to any items, such as Neuromods, that your previous character left behind
- Unlock all five playable characters
- Successfully escape with Riley Yu by uploading your consciousness at least once
- Unlock the Pilot ability for Vijay
- Unlock the Hacking II ability for Claire
- Unlock the Repair III ability for Joan
- Find the fabrication plans for the following items:
- Shotgun
- Shotgun Ammo
- Med-Kit
- EMP Grenade
- T-Ration
- Anti-Rad
- Delay Loop.Time
- Escape Pod Navigation Chip
- Propulsion System
- Control Module
- Escape the Moonbase simulation via each method at least once so that you understand how each of them work
Run 1 - Joan
The first character you will use is Joan. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (60+)
- Med-Kit x5
- EMP Grenade x5
- T-Ration x5
- Anti-Rad x1
- Delay Loop.Time x5
- Propulsion System
- Control Unit x4
Now you're all set, so load up the simulation. When you gain control of your character, head to the Crater and, using the strategy outlined in the "Apex Predator" achievement, take a few minutes to kill the Moonshark with your turret. Make sure to pick up the Delay Loop.Time from the Moonshark's remains and use it to buy back some time on the Corruption Timer.
Head to the Security Station in the Crater and check the terminal for the functioning Escape Pod, Tram Power, and any Hazards within the Moonbase. Now exit the terminal and head into the nearby Power Station. If there is an area without power, use two Control Modules to restore power to that section of the Moonbase. If all three areas already have power, drop two of the four Control Modules from your inventory.
Now head to Pytheas Labs. It's worth noting here the following items:
- EMP Grenades will be used to power down the Typhon Gates during each and every run
- The Propulsion System should be used often to cover ground quickly or evade Typhon if needed
- Use a Delay Loop.Time once your Corruption Timer fills up about 50 to 75%
- You want to ensure your Corruption Timer always remains at Level 1 while working on this achievement; if you reach Level 2, any and all Typhon you killed during Level 1, including the Moonshark, will respawn and they will be much stronger
- As such, if you end up killing most of the Typhon during this initial run with Joan, every subsequent run will be much easier since there won't be any enemies to worry about (unless you reach a new section of the Moonbase that you didn't previously clear out with Joan)
Inside Pytheas Labs, unlock Volunteer Cell 5 and collect five non-alcoholic drinks from inside the cell. Next, make your way to the Mimic Portal in the back of labs and repair the machine. If the Moonworks Tram had power when you checked the Security Station earlier, make your way upstairs and use the Tram to visit Moonworks; if the Tram did not have power, then you will have to return to the Crater and go to Moonworks the long way.
In Moonworks, head down to the central mine and place the Anti-Rad, five non-alcoholic drinks, and five T-Rations into the marked shipping container. Now repair the gravity lift nearby and use it to reach the Mass Driver Control Room. Fight your way to the marked control console. Before activating the Mass Driver controls, summon the Mule Operator and dump all of your inventory items onto the companion. Now activate the controls and quickly make your way back to the shipping container. You only have sixty seconds to escape. The moment you step foot inside the container, the doors will close and you will successfully escape the Moonbase.
Run 2 - Riley
The second character you will use is Riley. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x3
- EMP Grenade x3
- Delay Time.Loop x2
- Propulsion System
Now load up the simulation. When you gain control of your character, immediately summon the Mule Operator and grab any important items you may need, such as additional Shotgun ammo, Med-Kits, EMP Grenades, or Delay Loop.Time items.
After this, head straight to Pytheas Labs and make your way to the Director's Office (it should be marked on your HUD if you activate the appropriate objective in your transcribe). If, upon reaching the second floor of Pytheas Labs, you find that the stairs leading to the Director's Officer are broken, you can use the ventilation on the far right wall (near the restroom) to reach the next floor.
Inside Riley's office, interact with the terminal and access Channel 0. Once this is done, go upstairs and place the Operator on the designated workstation. If the stairs are on fire in this playthrough, just run through the flames quickly and heal yourself afterwards. Next, upload the data to the Operator via the terminal and then move the Operator to the extractor. Before you sit down in the chair, summon the Mule Operator and dump all of your inventory items onto the companion. Now you're ready to sit down in the chair and escape the simulation.
Run 3 - Claire
The third character you will use is Claire. In the Loadout Menu, equip the following items:
- Shotgun
- Med-Kit x2
- EMP Grenade x2
Now load up the simulation. When you gain control of your character, immediately summon the Mule Operator and grab any important items you may need.
After this, head straight to Pytheas Labs and make your way to the Mimic Portal. Before doing anything else, summon the Mule Operator and dump all your inventory items onto the companion (again, you likely didn't need to use much on this playthrough). Now hack the terminal inside this room and then choose the option to stabilize the Portal. The Portal will only stay stabilized for a few seconds, so quickly exit the terminal and run straight into the Mimic Portal in order to escape the simulation.
Run 4 - Vijay
The fourth character you will use is Vijay. In the Loadout Menu, equip the following items:
- Shotgun Ammo (60+)
- Med-Kit x4
- EMP Grenade x3
- Delay Time.Loop x2
Now load up the simulation. When you gain control of your character, immediately summon the Mule Operator and, as is expected by now, grab any important items you may need.
After this, head straight to Crew Annex. Since you have yet to enter this section of the Moonbase with any previous character, take some time to fight the Typhon in Crew Annex and make use of Delay Loop.Time items to buy back as much time as needed to remain at Corruption Level 1.
You're goal here is to reach the top floor of Crew Annex. Once there, enter the shuttle, kill the mimic that is hiding in the storage room at the back of the aircraft, and then return to the cockpit. Summon the Mule Operator and dump all your inventory items onto the companion. Now interact with the shuttle's controls and escape the Moonbase simulation once and for all.
Run 5 - Andrius
The final character you will use is Andrius. In the Loadout Menu, equip the following items:
- Shotgun + Ammo (48+)
- Med-Kit x2
- EMP Grenade x2
- Escape Pod Navigation Chip
Now load up the simulation. When you gain control of your character, immediately summon the Mule Operator and grab any important items you may need (which, at this point, is not much despite the Mule likely having several Med-Kits, EMP Grenades, and Delay Loop.Time items).
During your escape run with Joan, you should have already pinpointed the location of the last functioning Escape Pod within the Moonbase. As such, all you need to do is head to that location with Andrius. You'll have to do a bit of fighting inside the Escape Pod room (whichever one it is [there are four potential locations]) since you have yet to visit any of these locations with any previous character.
Regardless, once the area is secured, enter the marked Escape Pod and shut the door behind you. Now place the Navigation Chip into the marked location on the floor and initiate the launch sequence on the terminal in order to escape the simulation and finally unlock the achievement!