What about a spacecraft?
It’s about time we get a nice shelter in orbit around earth. Suppose the space station survived the apocalypse - with or without the astronauts - and with a high enough computer skill (let’s say, 12) you could hack into a lab and gets it’s course coordinates.
Then we could build a rocket engine mod for the nuclear missile at the nuclear silo - would require something like 100,000 oxidizer for the fuel, 4 minireactors, 48 mininukes, 200 rams, power converters, pilot light, a seat, a modified hazmat/ANBC suit with an oxygen tank and an inbuilt computer and life suport, a jet pack, an automated rehydraton/feeder, and maybe a thousand steel frame and a hundred metal tanks, all in all requiring something like mechanics 24, electronics 18, computer15, tailoring 12, construction 20, first aid 15, cooking 22 and so on - the idea is for this to be an ultimate achievement, so maybe require some ultra rare books and/or throw in some artifacts in the recipe too.
To launch the thing, you have to build an structure using all that stuff at a nuclear silo then hack it to launch the rocket into orbit; then once in orbit, the survivor would be able to explore some space stations for unique loot and have the honor of starving/asphyxiating to death in space, or hack the space station and force it to burn up into reentry - you could build an ejector to survive the fall that would generate a 3x3 highly radiocative crash filled with superalloy and other rare loots.
