How do you get the dungeon?
Free Cassie from the Don and get 10,00 creds for the renovation.
How do get to enter Upper New Ark?
Before you Ask No no one will give a clear answer how to save her, it is Long.
Just search Lust Doll+ Save Cassie Wiki, this is Edge so it might need a different way of Wording for other search Engines.
Shabby Ticket Pass, from junk vendor after the Hobo sold you info on who to get it from, give him food for info.
Go to Lin-Lin then get any massage.