say the bombs will be falling... but you have the chance to build your shelter..

you already have a supply of food/medicine/energy generation to stay in the bunker perpertually if need be...

all you still need is entertainment.
logically the bunker will be fully cut off, and you can expect the internet and any ability to download anything after you walk in to not be possible.
you can reinstall only if you got say a dvd or backup capable to do that off..
so if you don't have that option and your instal gets corrupted thats it no more acces..
and durability IS a factor (if the hardware breaks there won't be a way to replace it)


what would be the computer (parts in it), what the os and what the software you bring into your bunker.
-> if you want an alternative entertainment system.. like a console or tablet.. that is allowed but that will be instead off not on top off your pc..

you are however not allowed to bring boxes full of spare parts.. the only way to cheat is like by like putting many harddrives 2 grafic cards, 4 sticks of memory etc in it.. but all must be part of ONE bootable system.... everything must be attached... and booting..