I entered a code on a new character that I'd previously explored on an old one. However, it says something about not crossing the same river twice. Since this obviously isn't character-dependent, how can I reset the codes I've explored (in the case of getting mobbed by Evil Clones, at least)?
You can't (as far as I know). That said, there's something like a hundred thousand of them so you shouldn't run out anytime soon.
Oh, good to know. I'll keep looking for a possible reset though. Thanks. EDIT: HAH! I found it. Just delete wkeys_all.dat in the Gaslamp Games/Dungeons of Dredmor folder.