I'm wondering what the common concensus is about what level an average group of players could beat certain BBEG's. If we're lucky, maybe this thread can turn into a CR discussion.
(I'm sure many of us have opinions about how much value CR is)
So, if my party of an average 4 is going all out on a fight that they are expecting. They've got the right tools for the job, even some homebrew kryptonite. What level can they beat a lvl 20 transmuter wizard?
more general questions:
Tarrasque? (and how?)
Homebrew kryptonite vs the wizards depend entirely on the details of the debuffing agent. Probably minimum of APL 14 if it's really good stuff, but the chances of the transmuter killing some of them are pretty good.
As for killing Big-T, I think a straight beatdown would be possible as soon as 16th if environmental and spell tactics are applied well.
See: http://paizo.com/paizo/messageboards/paizoPublishing/pathfinder/campaignSet ting/general/howToKillATarrasqueOfficialThread