As far as Darla (or Angelus) swatting the cross away, or the Master hugging up on one (& Spike as well) - apparently it doesn't KILL a vamp. Just hurts them. I think the Master was just practically immune to it; he'd been around so long he no longer gave a damn about a cross. But Darla & Angel (or rather, Angelus) - they were just such bad-asses, so wicked, that they were willing to risk any pain & continue fighting - partially because they enjoyed it (the fighting I mean).
Well, listening to his monologue in that scene, even the Master wasn't immune to the effect, talking about the unease "two beams of wood in a certain arrangement" caused him or something like that (I seem to remember he even did "sizzle" a bit). He was just strong and experienced enough to overcome both unease and pain by mental discipline, so I guess the above comparison (was it by palabra?) still stands that a vamp
can touch a cross, just as a human
can take out a metal cake form out of the oven with his bare hands, it's just awfully uncomfortable to say the least and thus nothing they would ever think of doing under normal circumstances.
What I'VE always wondered is: WHY would a "wooden stake" through the heart KILL a vamp? I mean, their HEART doesn't even beat. And why does it have to be a WOODEN stake? Why not a steel stake? Or a very sharp, pointy letter opener? I can see where beheading would kill them. Or fire. But the sun? or a stake? Nah, I don't get it. But I'm willing to forego any understanding to enjoy the entertainment value. 😉
Ok, time for smartass blah from Mysti.
🙂
The idea behind the stake is: Vampires are unnatural, so tying them back into the natural life cycle of things destroys them. Staking as we see it in Buffy is
way easier than the original concept, it's meant to be driving a wooden stake through the heart, coming out in the back and pinning the vampire to living soil, thus mimicking a naturally growing tree. Actually, several vampire lore versions make even this rather more complicated ritual out to not
destroying a vampire, but merely forcing him into hibernation/dormancy. The full destruction then comes only by staking to the ground, beheading, filling the mouth with consecrated oblates and finally burning. (Imagine how tedious the show would have become if they had used
that version...)
As with the sun, well, it's a symbol of life power and God, so it's been rated as uneasing/uncomfortable to vampires pretty much from the beginning of the legend. However, the concept of the sun outright
destroying vamps by burning them to ashes is a rather recent addition to vamp lore. To my knowledge, this idea is used for the very first time in Murnau's "Nosferatu" of 1922, it simply became immediately so popular that a reversion to the original "mere discomfort" concept, e.g. in "Bram Stoker's Dracula" of '92, nowadays strikes us as odd, to say the least.