the first mission in Rasputin's Bunker is called the First Firewall, I have already forgotten what the mission located in the Cayde's Stash tower but you have a few minutes to race to the top to find a core which has 5 components. the 5 components are dismantle a legendary or higher heavy weapon, complete the archive on any difficulty, complete a warsat on earth, moon and mars (sabre strike warsat has been proven not to count), once those 5 components are complete you hand it into Banshee for more waiting All this has been all over the forums, etc though so I'm not sure it needed another thread