This section contains a walkthrough for Repo Man, one of the penultimate story quests in Prey. The quest begins in Alex Yu's office moments after the unsuccessful attempt to send the coral data. The new assignment has two main objectives - finding your way to Dahl's command shuttle in order to investigate it, and taking care of Kaspar, Dahl's tech officer.
Note - The mission unlocks a number of side quests involving Dahl - Ghosting Dahl, Dahl's Ultimatum, and Incapacitate Dahl. The walkthroughs for all three variants can be found in Side Missions -> Dahl.
Reaching Dahl's Shuttle
Dahl's shuttle can be found in Shuttle Bay - you can access the area from Talos I Lobby. Make your way to the Arboretum elevator and travel to the lobby. Once you've accessed the area, make your way to level one to access the previously unavailable pathway located in southern part of the map next to the security precinct.
The exploration of the shuttle bay is made difficult by numerous military operators summoned by Dahl. You can get rid of them by throwing EM grenades, but make sure to always keep a spare few, as there is always a possibility of a new operator approaching your position. To counter the problem of appearing operators, simply engage the current enemy until he's been damaged and lands on the ground. If you leave him be in that moment, you won't have to worry about any replacements (which are generated by dispensers marked with red icons on your map).
Note - Operators' attacks are particularly powerful against armor. Keep track of your suit durability and make use of suit repair kits or friendly operators.
Dahl's shuttle is located on level two of the main hangar. Unfortunately, the way is shut by a retracted bridge - unlocking it requires a visit to one of the terminals found on level three.
Level three can be accessed through the inactive gravity shaft located in the western part of the floor. Activating the shaft requires you to pay a visit to level one first. The area is full of operators, Phantoms, or defense turrets that can engage you if you had bought Typhoon powers. Continue investigating the floor until you've found the corpse of one Scott Parker. Search it to find Shuttle Control Room Access Card.
Use the access card on the locked door found in the northern part of level one (screenshot 1). Defeat a voltaic phantom and enter the Mechanic Facilities. You need to find the Tooling Room which contains the computer of the previously encountered Scott Parker. Go to Grav Shaft Controls in Utilities, and activate the gravity shaft (screenshot 2).
You can now use the western staircase that will allow you to access level two (alternatively, you can get past a security room on level two by unlocking the door using the acquired access card). Use the unlocked gravity shaft to travel to level three of Shuttle Bay.
Make your way to the Air Control Tower by defeating the new operators found along the way. The walkway leading to the tower is damaged, but you can use your Artax to make it to the door.
Use the terminal found in the Air Control Tower to unlock the pathway leading to Dahl's shuttle, which is located on level two. The terminal found in Air Control Tower will enable you to unlock the pathway leading to Dahl's shuttle. Make your way to level two and use the jetty to access the shuttle (double back using the same route or fly using your Artax).
Searching the shuttle
Fortunately, the interior of Dahl's Shuttle isn't guarded. Your job is to access Dahl's computer - interact with it and proceed to Files to download the mission parameters. The file also contains the whereabouts of the tech officer, who can be found in the Neuromod Division.
Taking care of Dahl's tech officer
The sought tech officer can be found in Neuromod Division, the location in which you've began the game. As a reminder - to access the area, you need to return to Talos I Lobby and access the pathway leading to Neuromod Division found on level two.
Continue moving for your objective by avoiding or destroying the encountered military operators (or possibly additional turrets if you are equipped with Typhoon powers). If possible, make your way to the balconies located above the helicopter mock-up found next to Yu's apartment (screenshot above). Use the advantage to take care of all operators found in the area.
Once you've cleared the area, proceed to the room with the helicopter. Kaspar (the tech officer) can be found in the side area shown on the screenshot above. You can access the area by breaking through one of the larger windows. Destroy the technician to complete the mission.
You can now proceed with The Keys to the Kingdom. The quest will see you take care of Dahl himself, either by killing, or incapacitating him and making him an ally.