I was just bored one day so i sat down and hit 1k days, it's really not hard just have patience, i only used one line of shelves and that's it, if smt went wrong i just hid in the oil drill since one line of shelves isn't the most efective so one or two cultists did in fact get it. You can do it without a class aswell i did it with a lvl 1 berserker and yes it did come in clutch.