city killer, shotgun - no, only seemed like 5 or so shotguns in game
companion nerve- kind of answered, look at charisma
look at how much companion nerve affects hp, ect- didnt have as much time with guide and couldnt find anything
where is "that gun"- dino mart, see picture ill post later
look into wild wasteland to see what it does in detail- there were about 25 different events on the last page of guide, didnt want to read them myself, and didnt have time to see which were wwl only
vaults, there are 5 only, vault 21 experiment was to have all decidition
made by gambling
plant vault was supposed to be a self contained biosphere
the question you asked it pretty broad, but ill see what i can
do- didnt have time
weapon mods, how they work, what they do, how to get them, what
skill effects them- took picture of entire modding section, basically, buy a scope, silencer, or larger magazine, point and click and its attached, but will post the shots i have.
quest perks/ earned perks- looked some for this didnt see anything, but again not much time
enclave- didnt get to this
better picture of map- ill upload later, have great pictures
more info on hc mode- found where to sleep ect for hardcore mode, and traits to pick for this, good natured for one, picture will explain
perks related to survival skill- this will kind of be covered in the hardcore survival pictures ill post.
hunter needs 30 survival
entomologist needs 45 survival
rad child needs 70 survival
travel light needs 45 survival
lead belly needs 40 survival, or 5 end
rad resistance needs 40 survival
animal friend needs 45 survival
besides that ill look into it
bullpup- not sure, no pictures of weapons
automatic shotgun is in game, so there is a FO2 weapon for you.