In this page you can find a walkthrough for The Keys to the Kingdom mission found in Prey. This is one of the main story missions and you get it during other main mission - Restore from Backup. The objective of that quest is to find two keys that are required for initiating Talos I's auto destruction procedure. The first key can be crafted. Sadly, the second one that belongs to Alex requires you to travel to new parts of the station.
- Craft your own Arming Key
- Get Alex's Arming Key
- Escape the Reactor
- Reaching Alex Yu's office
- Fending off the operators attack
- Taking care of Dahl
- Meeting Alex Yu
Craft your own Arming Key
This mission is added automatically to your journal when, during Restore from Backup main mission, you get Morgan's Arming Key fabrication plan. You get it after using the computer in the Command Center in the Deep Storage. You can craft Morgan's Arming Key by using one of the fabricators, one of them is in the Command Center. Find the key from the list of the items that you can craft (the picture above) and use materials to get this item. You only need 1 unit of mineral materials.
Warning - If you missed your chance to use the fabricator in the Deep Storage's Command Center you can still complete this objective later without any problems. You can complete it by using any of the fabricators on the station.
Get Alex's Arming Key
This quest is continuously updated as you make progress in other missions from the main story. First, you must reach the Cargo Bay - you go there during This Side Up main mission. Also, you must unlock the door to Cargo Bay B which is done during Shipping and Receiving main mission. When you clear the Cargo Bay B from Typhons you can go through it. A rather linear path takes you to the passage to a new location - Life Support.
When you enter the Life Support you automatically receive a new main mission called Reboot that gets a priority over other missions. Reset the reactor to complete this quest. The result of this action is that you remove the station's blockade issued by Alex.
Escape the Reactor
Once you've completed the Reboot mission, a conversation with Alex Yu will initiate and the man will propose a meeting in his office. However, your objective now is to escape the reactor room. It won't be an easy task, as the lower part of the northern stairway was destroyed and you won't be able to use it again. What's more, monsters have appeared in the area, with two Typhoon Technopaths among them. It's advised to attack those creatures one by one by using, among other things, the Recycler Charge and the Q-Beam. Additionally, if you've unlocked the storage earlier you can find 4 turrets there. You can set them up and use against the enemies, but keep in mind that if you're using typhoon neuromods you can also be attacked by them.
You can go up (or to be more specific to level -3) in two ways. The first method requires you to go to the north-western corner of the reactor room where you can repair a fuse box, fixing the nearby grav shaft
The second method requires a lot of climbing. In this case you must start by reaching metal balconies located directly above the reactor. You can then select one of the footbridges leading to the western balconies. Once there, start jumping to platforms located above to reach fans and other larger objects. Watch out for Mimics, avoid contact with the fire (you can clog the gas pipes with the GLOO Cannon) and constantly use the Artax Propulsion System to reach more distant ledges. You should soon reach the upper part of the northern stairway. This one wasn't destroyed and you can use it to reach level -3.
Reaching Alex Yu's office
Continue your journey towards the exit of the power plant (you can complete Assist Mikhaila Ilysushin side mission along the way). Once back in the large room on level -2, you will be informed about the high concentration of gas and the risk of an explosion. This means that you must stop using any firearms, as well as attacks that might produce sparks. This problem can be tackled in several ways. You can kill the enemies you encounter by using different tools (like, for instance, the combination of GLOO Cannon and a melee weapon), avoid any contact with them, or lower the concentration of the gas. If you've chosen the last option, you need to explore the area in search of control panels like the one shown in the above screenshot. You can use your Repair skill on it - fixing all three of those control panels will eliminate the threat.
Regardless of your approach, head back to level -1 and go through the passageway leading to Life Support. Once there, go through the passage to Talos-1 Lobby located right next to the Security Station on level 1. Afterwards, enter the main elevator and disarm the active Recycler Charge shown in the above screenshot. Now head to Arboretum.
Once in Arboretum you will receive a new message from Alex Yu containing a code to the grav shaft leading to his office. Use the code to complete your task and reach the destination. Once in the office, a new main mission - Before I Give You the Key - will start and it will be your next task.
Fending off the operators attack
You will gain access to the next part of the described mission once you've completed Before I Give You the Key mission - after scanning the coral located outside the station and trying to send the scan. The final part of the mission will fail. What's more, military operators sent by Dahl (starting from this moment you will encounter more of them throughout the whole station) will appear in Alex Yu's office in Arboretum. You can either engage them in combat or get away from the office as quickly as possible. If you decide for the former approach, remember to use both EMP and Disruptor Stun Gun to stun the enemies and allow you to easily attack them.
Regardless of your approach, Alex will inform you that he won't come out of hiding until you take out Dahl and his tech officer. Taking care of the tech officer is a part of Repo Man, an assignment that begins after an unsuccessful attempt to send the acquired coral data (after Before I Give You the Key) You'll need to travel to Shuttle Bay to find and take care of Kaspar, Dahl's tech officer.
Taking care of Dahl
The quest that sees you take care of Dahl breaks into two variants (Incapacitate Dahl, and Dahl's Ultimatum). The walkthroughs for the different variants and other quests involving the admiral can be found in Side Missions -> Dahl section of the guide.
Sometime after exploring Dahl's Command Shuttle, Dahl will contact you and threaten to kill the station inhabitants being held hostage in the Cargo Bay (Dahl Ultimatum). You can stop him by making your way to Life Support. Your target can be found in Oxygen Flow Control Room on floor two near Atmosphere Control Room.
Once you've reached Dahl's dwelling, you can proceed in two ways. Morgan can simply kill the target (watch out for military operators and Dahl himself, as he is armed) or use the Disruptor Stun Gun to incapacitate the opponent, provided you've received a mission to dispose of Dahl from Dr. Igwe (Incapacitate Dahl). More details on the second approach can be found in Side Missions -> Dahl.
Meeting Alex Yu
The last part of the mission will initiate once you've dealt with Dahl (by either killing or incapacitating him during the Incapacitate Dahl side mission) and his tech officer, after completing Repo Man main mission. Alex will invite you again to his office in Arboretum. Don't enter his office. Instead, examine the outer walls of the office and look for a hidden panel (shown in the above screenshot). Activating it will initiate a meeting with Alex.
Note - Before you decide to meet with Alex, make sure that you've completed all of the side mission thus far. After advancing to the finale, all of the unfinished side missions will be canceled (apart from Who is December? and Incapacitate Dahl).
During the meeting with Alex you can behave in two different ways. The first approach is to listen to the whole conversation and collect Prototype Nullwave Transmitter plan from him. Soon an Apex typhoon will appear and Alex will lose consciousness. Once zero gravity comes about to Arboretum, you can ignore the unconscious Alex or approach him and search the body for a TranScribe and Alex's Arming Key.
The second approach requires you to kill Alex. This can be done either during his speech or after he loses consciousness. In this situation you will also receive the Prototype Nullwave Transmitter plan, TranScribe device and Alex's Arming Key. Additionally, once you kill Alex, you will receive Push the Fat Guy trophy / achievement.
Regardless of your approach, you will unlock two new main missions associated with different endings of the game:
- A Mind Without Limits main mission is about constructing the Nullwave Transmitter device and using it to destroy all typhoons.
- Perdition main mission is about using both arming keys (that of the main character and the one you've just collected) to initiate the station autodestruct sequence.
Both of those missions exclude each other and their descriptions can be found in the further part f the guide.