Not really. Horror has never really been Fallouts thing, it's had alot of tongue in cheek. The iconic imagery, the music, the jokes and etc.

[censored] the metro.
I was always being super sneaky crawling through
thoes tunnels I had my silenced 10mm and creeped hardcoe.
Getting out was the bast part.

I hope the game continues the same unsettling feeling you got from Fallout 3

First walking out of the vault, seeing a completely barren landscape and knowing danger could lurk round any corner and kill you at the moment's notice I thought was really good. I got killed my a raider with a flamer shortly after first leaving the vault and so was well aware how vulnerable I was in the wasteland

Fallout 3 is creepy....
I usually got goosebumps if i'm in a dark area unknown to me....
The last thing i want in a dark area is a deathclaw (in deathclaw sanctuary, i even ran away :bolt: from that place, because it have too many deathclaws. Pity me, :facepalm: there's Vengeance somewhere in hat dark and creepy cave of terror (a unique gatling laser)

I expect F:NV to be more creepier, especially in the dark depths of that game (Hope there's no daedra in F:NV)
If there's an easter egg when you encounter an inaccessible daedra-spawning oblivion gate, i will run away........ :ahhh: bliviongate: :bolt: :ahhh: