I'm gonna have to disagree with Chayesh. As I stated multiple times, the problem that others forsee is NOT that you become an outlaw, but the ramifications that come with being an outlaw. I personally don't really have any problems with tribs or vampires, but people complain about the solution rather than the premise. The 'overpowerness' factor that people complain about is because they believe that the game should be FAIR in all aspects, whether you are wanted or not, whether you fight a qrace/qclass or not, etc. One class/race/combo shouldn't completely dominate.
Once again, I reiterate, this is not my opinion but the general attitude I get from those who rigorously complain.
In any case, there are numerous ways to beat a vampire. This actually goes along with beating most classes. People have fought vamps before...what spells do they favor? What skills do they favor? What items are obtainable that will reduce these specific traits? Do you have detect magic up? Seriously, if you're a giant sized race with detect magic and the vampire makes a specific oversight, you'll sooooooo screw him over. I remember an ogre warrior gladiator with 5 pieces of decent rare completely crushing my vampire. What weapons do the vampire use? Do you know if it's burnproof or not? What time of day is it? What SUPPLIES does the vampire have (get someone to locate some items for you)? Do you have protection from evil on? How long does your sanc last? Who ELSE is in the area that might possibly give you aid (not saying to gangbang, although I am all for that against an uber powerful character, but healing or recall or whatnot)?
I'm betting that more than 50% of the people who fight Mart are running on adrenaline rush and make ditzy mistakes. Or that those people haven't even THOUGHT of these methods and just go in hoping for the best.