Magic don't work like, if it doesn't say the spell does it, then the spell doesn't do it. Besides, invisibility would only bend the visible spectrum of light, there is a lot of radiation from the sun that would still hit you.

Sure is. The only question is which part of it are vampires allergic to? If they are not allergic to any given frequency or combination of frequencies, as those could be artificially simulated, but are in fact allergic to some 'supernatural' aspect of it, then making a manna shield against it should work just fine.

somewhere in the history of Shadowrun there was once a description of IMPROVED INVISIBILITY that said it would actively bend the light around the spells target . . so no light hitting the vampire, because it's diverted . . and thus no negative consequences . . you know, aside for the simple fact, that you need light to hit your eyes so you can see . . ok, you could circumvent that with spells or other such means . .
hrm . . full body suit with ruthenium-polymers tha looks like every-day clothing, including gloves and a full head mask like one that is used in motorcycles or skiing or something like that?
or hell, simply have a full-body body-painting . . technically, as long as the pain stays on, the PAINT gets hit and not your body . . then just add really good shades and voila?

Well, in the example of "2-3 heavy pistol rounds means the back 1/2 of your skull is most likely missing", it should be noted you do not regenerate head or spine wounds. So, even if you are allowing the vaguely 'technically' correct assumption that said vampire gets one last regen attempt once his allergy is lifted... he still doesn't.

Ohh god, then we have blade vampires where they can get around it with sunscreen.

Maybe I just play too much V:tR, but I believe a racial weakness is a key component of a race and shouldn't be very easy to circumvent.

*shrugs*
it's a technicality . . if you have a GM that lets such things fly with an:"i did not know it could do that", then it is your given right to be as rules-lawyerish as you want . . if he doesn't . . well, good try anyway *snickers*

I take it this means if one had an appropriate "Alleviate Vulnerability" spell, the above would not apply in the same vein that an Allergy would be rendered irrelevant to someone that had the appropriate Alleviate Allergy spell on them?

I can be a jerk of a rules lawyer but at the same time, if I find something that exploitative, I'll use it just to make the GM call foul.

When that happens, I will show and explain how what I'm doing is within RAW as well as cite modern media examples of the very same functions. Then offer a compromise that preserves the spirit of what I did and close the smart-assery.

It also need matter to regenerate (no strange nuclear syntesis, quantistical drek, or phisics anomalies, you can't create matter from nothing), bricks to build new tissues; if chop it and keep the resulting parts separed for enough it IS giong to die. Failing that try explosives (sub-tactical nuke is probably the bare minimum), molecular destruction (plasma furnace, particle accellerator, put it on a rocket and fire it on the sun), convince it to commit suicide (naked brackhaven photo), use it as a living vessel for an allay spirit, allay with it (not the best thing with infecteds but 'shifters could do), quickened turn to goo and use it (along clay plasteel, whatever) to make angels statues for presepes (the more the better) and send them all over the globe, keep casting death touch until you bring it more than twice it body over the overflow treshold, have Lowfyr eat it, starve it to death, and if you tryed all this and still lives hire AH as consulentant, he will know what to do.

"I love the smell of despairing GM's in the evening!"
yeah, one of the most fun parts of shadowrun is still making other players and GM go corsseyed and groan when they see the newest abomination i started up . . i make them sweat with the possibilities of one hyper power gamer character, then i concede and play another character that is BY FAR not as bad . . but still comparatively high power to usual starting characters ^^

I'd just say "Nay." and wait until you create an actual character (IMG:style_emoticons/default/smile.gif)